ASD-STAN PREN 6071-1998 Aerospace Series Aluminium and Aluminium Alloy Wrought Products Technical Specification Plate (Edition P 1)《航空航天系列 铝和铝合金压力加工制品 技术规范 厚板材 第P1版》.pdf

《ASD-STAN PREN 6071-1998 Aerospace Series Aluminium and Aluminium Alloy Wrought Products Technical Specification Plate (Edition P 1)《航空航天系列 铝和铝合金压力加工制品 技术规范 厚板材 第P1版》.pdf》由会员分享，可在线阅读，更多相关《ASD-STAN PREN 6071-1998 Aerospace Series Aluminium and Aluminium Alloy Wrought Products Technical Specification Plate (Edition P 1)《航空航天系列 铝和铝合金压力加工制品 技术规范 厚板材 第P1版》.pdf（19页珍藏版）》请在麦多课文档分享上搜索。

1、STD-AECMA PREN b07L-ENGL 1778 .I 1OL23LL 0015b07 IT2 AECMA STANDARD NORME AECMA AECMA NORM prEN 6071 Edition P 1 November 1998 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES (AECMA) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: EN

2、GLISH VERSION Aerospace series Aluminium and aluminium alloy wrought products Technical specification Plate Srie arospatiale Demi-produits corroys en aluminium et alliages daluminium Spcification technique Plaques Luft- und Raumfahrt Aluminium und Aluminium Knetlegierungen Technische Lieferbedingung

3、en Platte This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (The European Association of Aerospace Industries). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee fo

4、llowing comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and signature of the AECMA

5、 Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. aecma 1998 Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199,

6、rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEAUX CEDEX Edition approved for publication Comments should be sent within six months after the date of publication to 1998-1 1-30 AECMA Gulledelle 94 B-1200 BRUXELLES AIBITFG Chairman Mr W. Lampa STD-AECMA PREN bD71-ENGL 1998 1012311 00LSbLO 014 Pag

7、e 2 prEN 6071 : 1998 Contents list 1 Scope 2 Normative references 3 Definitions 4 Requirements 5 Qualification testing 6 Release testing 7 Marking Annex A (normativ) Qualification testing and inspection/test frequency Annex B (normativ) Release testing and inspection/test frequency 1 Scope This stan

8、dard defines the specific requirements for aluminium and aluminium alloy plate. The plate may be clad or unclad supplied in the as-rolled or machined condition. It shall be applied in conjunction with EN 6070. 2 Normative references This European Standard incorporates by dated or undated reference p

9、rovisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in

10、it by amendment or revision. For undated references the latest edition of the publication referred to applies. IS0 1880 EN 2002-1 EN 2004-1 EN 4500-1 EN 6018 EN 6070 EN 6072 EN 6073 ASTM-B 557 ASTM B 769-94 ASTM-E 3 ASTM-E 9 ASTM-E 11 1 ASTM-E 238 Instruments for the measurement of surface roughness

11、 by the profile method; Con- tact (stylus) instruments of progressive profile transformation; Profile recording instruments Aerospace Series - Test methods for metallic materials - Part 1 - Tensile testing at ambient temperature ) Aerospace Series - Test methods for aluminium and aluminium alloy pro

12、ducts Part 1 - Determination of electrical conductivity of wrought aluminium and aluminium alloys Aerospace Series - Metallic materials - Rules for drafting and presentation of material standards- Part 1 - General rules I Aerospace series - Test methods for metallic materials - Determination of dens

13、ity according to displacement method ) Aerospace series - Aluminium and aluminium alloy wrought products - Technical specification - General requirements) Aerospace series - Metallic materials - Test methods - Constant amplitude fatigue testing I Aerospace series - Metallic materials - Aluminium and

14、 aluminium alloys - Test me- thods - Drop test ) Standard Test Methods of Tension Testing Wrought and Cast Aluminium- and Magnesium-Alloy products 2 Standard Method for Shear Testing of Aluminium Alloys ) Standard Practice for preparation of Metallographic Specimens 2, Standard Test Methods of Compr

15、ession Testing of Metallic Materials at Room Temper- ature 2, Standard Test Method for Youngs Modulus, Tangent Modulus and Chord Modulus Standard Test Method for Pin-Type Bearing Test of Metallic Materials ) 1) Published as AECMA Prestandard at the date of publication of this standard 2) Published b

16、y: American Society for Testing and Materials (ASTM). 1916 Race Street, Philadelphia, PAI 91 03. USA Page 4 prEN 607 1 : 1998 I i ASTM-E 399 ASTM-E 561 ASTM-E 602 ASTM-E 647 ASTM G 34-86 ASTM-G 47 MIL-H-6088 MIL-STD-2154 Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials

17、Standardpractice for R-Curve Determination Standard Test Method for Sharp-Notch Tension Testing with Cylindrical Specimens 2, Test Method for Constant-Load-Amplitude Fatigue Crack Growth Rates Above 1 O-8miCycle Standard Test Method for Exfoliation Corrosion Susceptibility in 2XXX and 7XXX Series Al

18、uminium Alloys (EXCO test) Standard Test Method for Determining Susceptibility to Stress Corrosion Cracking of High-Strength Aluminum Alloy Products Heat Treatment of Aluminum Alloys 31 Inspection, Ultrasonic, Wrought Metals, Process for 3, 3 Definitions For the purposes of this standard the followi

19、ng definitons apply: General definitions see EN 6070. 3.1 Parent plate Plate undergoing the same operations over its whole length (including solution heat treatment, controlled stretching, ageing) before being cut. 3.2 plate Flat rolled product of rectangular cross-section and uniform thickness over

20、 6 mm. 3.3 Machined plate Product produced from a plate completely machined over one or two faces. 3.4 Controlled stretching Stretching performed after solution heat treatment and quenching for the purpose of reducing internal stresses. The stretching is defined by a minimum permanent elongation and

21、 if necessary by a maximum permanent elongation indicated in the material specification. 2) Published by: American Society for Testing and Materials (ASTM). 1916 Race Street, Philadelphia, PA19103, USA 3) Published by: Department of Defense (DoD), the Pentagon, Washington D.C. 20301, USA STD-AECMA P

22、REN b07L-ENGL 1998 = ltOL232L 0015b13 823 E Page 5 prEN 607 1 : 1998 Number of parent plates per batch 1 to 2 4 Requirements Number of parent plates to be tested 1 4.1 General Requirements See EN 6070 3 to 4 4.2 Technical Requirements 2 4.2.1 General 5 to 6 6 The plate shall satisfy the requirements

23、 of the relevant material standard and the related Individual Product Specification (IPS). Unless otherwise specified in the relevant material standard or IPS, the test method and test frequency are given in Annex A for qualification testing and in Annex B for release testing. 3 4 Manufacturer must

24、ensure a consistent material as far as structure, chemical composition and strength are concerned. 4.2.1.1 Controlled stretching Controlled stretched plate shall be largely free from residual stresses to minimize distortion during machining. Straightening and dressing operations following either sol

25、ution heat treatment or controlled stretching are not permitted. 4.2.1.2 Edges All edges must be free from cracks andlor protruding burrs. 4.2.1.3 Batch size for testing When test frequency refers to batch the following applies: - for 6 mm 12mm: batch size shall be limited to one parent plate. STD-A

26、ECMA PREN b071-ENGL 1998 m 1012311 0015bL4 7bT D Page 6 prEN 6071 : 1998 4.2.2 Specific 4.2.2.1 Tensile properties The test frequency shall be one specimen per direction/location and batch. Parent plates shall be tested at - - - one end for a length of I 2000 mm or one end for a length of 2000 mm in

27、 the thickness range 6 mm 2000 mm and thickness of a 25 mm The location of the specimen shall be in accordance with the requirements of table 2. Table 2 25 60 Table 3 Orientation of specimen Position of specimen axis relative to: Thickness Width L-T b/3 a12 T- L L-T T-L al4 s-L a12 bl3 Plate thickne

28、ss mm 6 40 a14 W-specimens adjacent to tensile specimens and defined by figure 1 shall be tested. Their form is described in ASTM-E-238, Figure 1. The location of the W-specimens shall be in accordance with table 6. Table 6 ST i. 20 cm2/rn2 Total area : s 150 cm2ffice 13 Polished suiface zones (repa

29、ir) Il 1) Adding up defects over the entire surface is not allowed. Each m2 in the area of a defect is to be evaluated separately. 2) Penetration of the cladding is not allowed. 3) Rolled-over metal shall not overlap, shall be chemically removable (e.g. pickling) and must not resuit in cavitations.

30、4) Defects on both faces, exactly opposite one another, are not allowed. 5) Rolled-in material visible after removal of 3 pm matenaliface by chemical pickling is not permitted. 6) Microsections shall be examined to verify that the white spots are not caused by corrosion. Page 11 prEN 6071: 1998 I 8

31、4.2.2.9 Chemical millability (C-Quality) - Maskedarea direct ion Specimens in accordance with figures 2 or 3 shall be taken from the plate. I, 1 Rolling direction O -0 Masked area 150 (Dimensions in millimetres) Figure 2: Specimen for TX-condition Figure 3: Specimen for F-condition The specimen from

32、 plate in the F-condition shall be heat treated to the condition of use. Specimens shall be partially coated with a chemical milling maskant (peel strength (3 to 7) N/2,5 cm2) on one side as shown in figures 2 or 3 and totally on the opposite side. Specimens shall be chemically milled up to a depth

33、of a/2. Thereafter the following shall be determined: - Surface Roughness The mean roughness values of the chemically milled surface shall be measured with an electric stylus instrument in accordance with IS0 1880. - Edge Quality The notch depth (t) and notch radius R,) of the specimen shall be meas

34、ured (see figure 4) - a distance b/5 from the edge as given in figure 5. It shall be placed on a measurement plate and only the dead weight of the specimen shall act as contact pressure. Additionally for plate delivered in TX-condition the flatness h of the specimen shall be measured at STD-AECMA PR

35、EN b071-ENGL 1778 m 101231L 0015b20 Tb3 m Page 12 prEN 6071 : 1998 Rolling direction / ,/ Rolling pzK t : notchdepth (mm) R, : notch radius (mm) Figure 4: Edge waviness 7- 71 thickness 1 b Figure 5: Specimen for flatness testing In case of dispute,a representative sample shall be immersed in a bath

36、of composition with the following volume and temperature: Bath composition: NaOH (150 k 1O)g/l AI (20 f 2) g/l H,O Remainder Bath volume: az4mm 1601 a4mm 3201 Bath temperature: + 80C +. 2C Page 13 prEN 6071 : 1998 Reagents Hydrochloric acid id = 1,191 4.2.2.10 Thickness of cladding and diffusion in

37、the cladding Quantity ml 1.5 a) Sample preparation Nitric acid (d = 1,38 to 1,401 Hvdrofluoric acid (40 % concentrated) The test frequency shall be one sample per batch. The sample, at least 20 mm long in the long transverse direction, shall be taken from the full thickness and one end of the parent

38、 plate. A cross section of the sample perpendicular to the rolling direction shall be prepared as follows: 25 0.5 to 1,0 - mechanical polishing: it is recommended to adequately protect the surfaces in order to obtain sharp edges (mounting the metallographic sample between two 7075 blocks has proved

39、satisfactory), Distilled (or deionised) water - electropolishing if required. For lower plate thicknesses, it is recommended to only use mechanical polishing to avoid cladding dissolution which would affect the results (about 2,5 prn per side would be dissolved during electropolishing). However bett

40、er resolution for copper diffu- sion is achieved when the cross section is electropolished prior to etching, As required for completion to 100 - etching: carried out by dipping the cross section for 1 O s (determination of cladding thickness) and additional 20 s (determination of copper diffusion) i

41、n the etchant according to table 8, at a temperature between 15C and 30C, - dark surface layer, if present, shall not be removed - rinsing in a stream of cold water - drying after dipping in hot distilled (or deionised) water b) Measurement of cladding thickness The cross section shall be examined u

42、sing an appropriate magnification between IOOX and 500X. Cladding thickness shall be measured on both faces, on at least five locations, at least 3 mm apart from each other. The mean cladding thickness per face shall be determined. c) Measurement of copper diffusion The cross section shall be examin

43、ed using an appropriate magnification between 1 OOX and 500X. The diffusion front is identified by a change of colour in the cladding from dark to light. It generally consists of a succession of peaks (enhanced diffusion along the grain boundaries) and valleys. Conventionally, the mean position of t

44、he diffusion front, for the field under examination shall be taken as the valley bottom closest to the surface of the plate. It distance form the core-cladding interface, b (see figures 6 and 71, shall be measured on that face of the sample with the minimum cladding thick- ness, on five locations, a

45、t least 3 mm apart from each other. - STD-AECMA PREN b07L-ENGL 1778 D LO1231i1 0015b22 83b Page 14 prEN 6071 : 1998 Hydrofluoric acid (HF) 55% Hvdrochlorid acid (Hel) 40% The largest b values measured shall be retained to represent copper diffusion. The result shall be expressed as a percentage of t

46、he total cladding thickness c: 2 3 claddin core Nitric acid (“0,) 70% Distilled (or deinonised) water C 5 90 Figure 6: 20 % copper diffusion I I Figure 7: 40 % copper diffusion 4.2.2.1 1 Microstructure Micrographic preparation of samples shall be in accordance with ASTM-E 3 using one of the followin

47、g etchants (tables 9 and 1 O) unless otherwise agreed between the manufacturer and the purchaser. Table 9 I Reaaent I uantitv ml -1 Page 15 prEN 6071: 1998 STD-AECMA PREN b07L-ENGL 1998 LOL23LL OL5b23 772 Table 10 Reagents Qu ant it y Fluoroboric acid (HBF,) 35% 5a I 200 ml Distilled (or deinosised)

48、 water 5 Qualification testing Unless otherwise required by the material standard the full qualification testing shall consist of the tests (test methods and test frequency) given in table A.l. The test results shall demonstrate compliance with the technical requirements of this technical specificat

49、ion and the material standard. 6 Release testing Unless otherwise required by the material standard, release testing shall consist of the tests (test methods and test frequency) given in table B.l. The test results shall demonstrate compliance with the technical requirements of this technical specification and the material standard or IPS, if established. 7 Marking All plates shall be marked legibly on one face as indicated in table 11 Table 11 Continuous marking ) (ink or similar woduct) Material standard Dimensional standard Delivery conditio