SAE AMS 4147D-2007 Aluminum Alloy Forgings 5 6Zn - 2 5Mg - 1 6Cu - 0 23Cr (7075-T7352) Solution Heat Treated Stress Relieved by Compression and Overaged (UNS A97075)《通过压缩和老化释放应力 溶解.pdf

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1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there

2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2012 SAE International All rights reserved. No part of this p

3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497

4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/AMS4147D AEROSPACE MATERIAL SPECIFICATION AMS4147 REV. D Issued 1968-05 Revised 2

5、007-02 Reaffirmed 2012-02 Superseding AMS4147C Aluminum Alloy Forgings 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T7352) Solution Heat Treated, Stress Relieved by Compression, and Overaged (Composition similar to UNS A97075) RATIONALE AMS4147D has been reaffirmed to comply with the SAE five-year review po

6、licy. 1. SCOPE 1.1 Form This specification covers an aluminum alloy in the form of die and hand forgings. 1.2 Application These forgings have been used typically for parts requiring a combination of good strength and resistance to stress-corrosion cracking, and where good stability is required durin

7、g machining, but usage is not limited to such applications. 2. APPLICABLE DOCUMENTS The issue of the following documents in effect on the date of the purchase order forms a part of this specification to the extent specified herein. The supplier may work to a subsequent revision of a document unless

8、a specific document issue is specified. When the referenced document has been cancelled and no superseding document has been specified, the last published issue of that document shall apply. 2.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001, Tel

9、: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org. AMS 2355 Quality Assurance Sampling and Testing of Aluminum Alloys and Magnesium Alloys, Wrought Products (Except Forging Stock) and Flash Welded Rings AMS 2772 Heat Treatment of Aluminum Alloy Raw Materials AMS 2808

10、Identification, Forgings AS1990 Aluminum Alloy Tempers SAE AMS4147D Page 2 of 7 2.2 ASTM Publications Available from ASTM International, 100 Barr Harbor Drive, P.O. Box C700, West Conshohocken, PA 19428-2959, Tel: 610-832-9585, www.astm.org. ASTM B 594 Ultrasonic Examination of Aluminum-Alloy Wrough

11、t Products for Aerospace Applications ASTM B 660 Packaging/Packing of Aluminum and Magnesium Products 3. TECHNICAL REQUIREMENTS 3.1 Composition Shall conform to the percentages by weight shown in Table 1, determined in accordance with AMS 2355. TABLE 1 - Composition Element min maxSilicon - 0.40Iron

12、 - 0.50Copper 1.2 2.0 Manganese - 0.30Magnesium 2.1 2.9 Chromium 0.18 0.28Zinc 5.1 6.1 Titanium - 0.20Other Elements, each - 0.05Other Elements, total - 0.15Aluminum remainder 3.2 Condition Solution heat treated, stress relieved by compression to produce a permanent set of not less than 1% nor more

13、than 5%, and precipitation heat treated to the -T7352 temper (see AS1990). The direction and method of compression shall be as agreed upon by purchaser and vendor. Solution and precipitation heat treatment shall be performed in accordance with AMS 2772. 3.3 Properties Forgings shall conform to the f

14、ollowing requirements, determined in accordance with AMS 2355 on the mill product. 3.3.1 Tensile Properties Shall be as follows: 3.3.1.1 Die Forgings 3.3.1.1.1 With Grain Flow Specimens, machined from forgings not over 4 inches (102 mm) in nominal thickness at time of heat treatment, with axis of sp

15、ecimen in the area of gage length varying not more than 15 degrees from parallel to the forging flow lines, shall have the properties shown in Table 2. SAE AMS4147D Page 3 of 7 TABLE 2A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness at Time of Heat Treatment Inches Tensile Strength

16、ksi Yield Strength at 0.2% Offset ksi Elongation in 4D % Up to 3, incl 66.0 56.0 7 Over 3 to 4, incl 64.0 53.0 7 TABLE 2B - MINIMUM TENSILE PROPERTIES, SI UNITS Nominal Thickness at Time of Heat Treatment Millimeters Tensile StrengthMPa Yield Strength at 0.2% Offset MPa Elongation in 4D % Up to 76,

17、incl 455 386 7 Over 76 to 102, incl 441 365 7 3.3.1.1.2 Across Grain Flow Specimens, machined from forgings not over 4 inches (102 mm) in nominal section thickness at time of heat treatment with axis of specimen as close to short-transverse direction as possible, shall have the properties shown in T

18、able 3 except as specified in 3.3.1.1.2.1. TABLE 3A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thickness at Time of Heat Treatment Inches Tensile Strengthksi Yield Strength at 0.2% Offset ksi Elongation in 4D % Up to 3, incl 62.0 51.0 3 Over 3 to 4, incl 61.0 49.0 2 TABLE 3B - MINIMUM TE

19、NSILE PROPERTIES, SI UNITS Nominal Thickness at Time of Heat Treatment Millimeters Tensile StrengthMPa Yield Strength at 0.2% Offset MPa Elongation in 4D % Up to 76, incl 427 352 3 Over 76 to 102, incl 421 338 2 3.3.1.1.2.1 The elongation requirements shall not apply to specimens having a gage lengt

20、h diameter less than 0.250 inch (6.35 mm) or located in immediate proximity to an abrupt change in thickness, or located so that any part of the specimen gage length is located within 0.125 inch (3 mm) of the trimmed flash line. 3.3.1.2 Hand Forgings Specimens, machined from forgings having an essen

21、tially square or rectangular cross-section heat treated in the indicated thickness, shall have the properties shown in Table 4 provided the as-forged section thickness does not exceed 6 inches (152 mm). SAE AMS4147D Page 4 of 7 TABLE 4A - MINIMUM TENSILE PROPERTIES, INCH/POUND UNITS Nominal Thicknes

22、s at Time of Heat Treatment Inches Specimen Orientation Tensile Strengthksi Yield Strength at 0.2% Offset ksi Elongationin 4D % Up to 2, incl Longitudinal 66.0 54.0 7 Long-Trans. 64.0 52.0 4 Over 2 to 3, incl Longitudinal 66.0 54.0 7 Long-Trans. 64.0 52.0 4 Short-Trans. 61.0 50.0 3 Over 3 to 4, incl

23、 Longitudinal 64.0 53.0 7 Long-Trans. 63.0 50.0 3 Short-Trans. 60.0 48.0 2 Over 4 to 5, incl Longitudinal 62.0 51.0 7 Long-Trans. 61.0 48.0 3 Short-Trans. 58.0 46.0 2 Over 5 to 6, incl Longitudinal 61.0 49.0 6 Long-Trans. 59.0 46.0 3 Short-Trans. 57.0 44.0 2 TABLE 4B - MINIMUM TENSILE PROPERTIES, SI

24、 UNITS Nominal Thickness at Time of Heat Treatment Millimeters Specimen Orientation Tensile StrengthMPa Yield Strength at 0.2% Offset MPa Elongationin 4D % Up to 51, incl Longitudinal 455 372 7 Long-Trans. 441 359 4 Over 51 to 76, incl Longitudinal 455 372 7 Long-Trans. 441 359 Short-Trans. 421 345

25、3 Over 76 to 102, incl Longitudinal 441 365 7 Long-Trans. 434 345 Short-Trans. 414 331 2 Over 102 to 127, incl Longitudinal 427 352 7 Long-Trans. 421 331 3 Short-Trans. 400 317 2 Over 127 to 152, incl Longitudinal 421 338 6 Long-Trans. 407 317 3 Short-Trans. 393 303 2 3.3.1.3 Special Purpose Forging

26、s Tensile property requirements for specimens cut from special forgings or from forgings beyond the size and configuration limits of 3.3.1.1 and 3.3.1.2 shall be as specified on the drawing or as agreed upon by purchaser and vendor. 3.3.2 Stress-Corrosion Resistance Forgings shall meet the electrica

27、l conductivity test of 3.3.2.1 and shall exhibit no evidence of stress-corrosion cracking when tested in accordance with 3.3.2.2. The test of 3.3.2.2 need not be performed on forgings meeting the requirements of 3.3.2.1.1 and 3.3.2.1.2. 3.3.2.1 Electrical Conductivity Shall be as follows, determined

28、 on the surface of the sample: 3.3.2.1.1 If the conductivity is 40.0% IACS (International Annealed Copper Standard) (23.2 MS/m) or higher and longitudinal tensile properties meet specified requirements, the forgings are acceptable. SAE AMS4147D Page 5 of 7 3.3.2.1.2 If the conductivity is between 38

29、.0 to 39.9% IACS (22.0 to 23.1 MS/m), if the longitudinal tensile properties meet specified requirements, and if the longitudinal yield strength does not exceed the specified minimum value by more than 11.9 ksi (82 MPa), the forgings are acceptable. 3.3.2.1.3 If the conductivity is between 38.0 to 3

30、9.9% IACS (22.0 to 23.1 MS/m) and longitudinal yield strength exceeds the specified maximum value by more than 11.9 ksi (82 MPa), the forgings shall be given additional overaging. If, after such treatment, the forgings meet the requirements of 3.3.1 and 3.3.2.1.1 or 3.3.2.1.2, the forgings are accep

31、table. 3.3.2.1.4 If the conductivity is below 38.0% IACS (22.0 MS/m), the forgings are not acceptable but may be re-heat treated or additionally overaged to meet the specified requirements. 3.3.2.2 Stress-Corrosion Cracking Resistance Specimens, cut from forgings 0.750 inch (19.05 mm) and over in no

32、minal thickness, shall show no evidence of stress-corrosion cracking when stressed in the short-transverse direction to 75% of the specified minimum yield strength in the principle test direction (longitudinal for die forgings or long-transverse for hand forgings). 3.3.3 Grain Flow Grain flow of die

33、 forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. 3.4 Quality Forgings, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from impe

34、rfections detrimental to usage of the forgings. 3.4.1 Each forging shall be ultrasonically inspected in accordance with ASTM B 594 and shall meet the following requirements: 3.4.1.1 Die forgings 0.375 to 4.000 inches (9.52 to 101.60 mm), inclusive, in nominal thickness and weighing not over 300 poun

35、ds (136 kg) shall meet Class B. 3.4.1.2 Hand forgings 1.000 to 8.000 inches (25.40 to 203.20 mm) in nominal thickness and weighing not more than 600 pounds (272 kg) shall meet Class A. 3.4.1.3 Acceptance criteria for forgings exceeding the limits of 3.4.1.1 or 3.4.1.2 shall be as agreed upon by purc

36、haser and vendor. 3.4.2 Each die forging shall be etched to produce a surface suitable for visual inspection. Surfaces shall be evaluated for defects such as seams, laps, bursts and quench cracks. Surface imperfections, which can be removed so that they do not reappear on re-etching and the required

37、 section thickness can be maintained, are acceptable. 3.4.2.1 When approved by purchaser, a sampling plan may be used in lieu of etching each die forging. 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for Inspection The vendor of forgings shall supply all samples for vendors tests and shall be

38、responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the forgings conform to specified requirements. SAE AMS4147D Page 6 of 7 4.2 Classification of Tests 4.2.1 Acceptance Tests Compositio

39、n (3.1), tensile properties (3.3.1), conductivity (3.3.2.1), and ultrasonic soundness (3.4.1) are acceptance tests and shall be performed on each lot. 4.2.2 Periodic Tests Stress-corrosion resistance (3.3.2.2) and grain flow (3.3.3) are periodic tests and shall be performed at a frequency selected b

40、y the vendor unless frequency of testing is specified by purchaser. 4.3 Sampling and Testing Shall be in accordance with AMS 2355 and the following: a lot shall be all forgings of the same configuration heat treated in the same batch-furnace load or a continuous furnace consecutively during an eight

41、 hour period. Maximum lot size for forgings heat treated in a continuous furnace and charged consecutively during continuous furnace operation shall be 2000 pounds (907 kg) for forgings weighing 5 pounds (2.3 kg) and under and 6000 pounds (2722 kg) for forgings weighing over 5 pounds (2.3 kg). 4.4 R

42、eports The vendor of forgings shall furnish with each shipment a report stating that the product conforms to the composition, tolerances, and showing the numerical results of tests, on each inspection lot to determine conformance to the other acceptance test requirements. This report shall include t

43、he purchase order number, lot number, AMS 4147D, size or part number, and quantity. The report shall also identify the producer, the product form and the size of the mill product. 4.5 Resampling and Retesting Shall be in accordance with AMS 2355. 5. PREPARATION FOR DELIVERY 5.1 Identification Shall

44、be in accordance with AMS 2808. 5.2 Packaging Forgings shall be prepared for shipment in accordance with ASTM B 660 and in compliance with applicable rules and regulations pertaining to the handling, packaging, and transportation of the forgings to ensure carrier acceptance and safe delivery. 6. ACK

45、NOWLEDGMENT A vendor shall mention this specification number and its revision letter in all quotations and when acknowledging purchase orders. 7. REJECTIONS Forgings not conforming to this specification, or to modifications authorized by purchaser, will be subject to rejection. SAE AMS4147D Page 7 o

46、f 7 8. NOTES 8.1 A change bar (|) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this specification. An (R) symbol to the left of the document title indicates a complete revisio

47、n of the specification, including technical revisions. Change bars and (R) are not used in original publications, nor in specifications that contain editorial changes only. 8.2 Hardness should be not lower than 125 HB/10/500 or 130 HB/10/1000 on die and hand forgings 3 inches (76 mm) and under in no

48、minal thickness determined in accordance with ASTM E 10. Hardness has been used to verify that product is properly processed, but an “out-of-range hardness number” is not always indicative of product with “out-of- specification tensile strength”. Further analysis, including material composition veri

49、fication, heat treat process parameter review, and/or tensile property measurement on product with out-out-og-range hardness, may be necessary. 8.3 Terms used in AMS are clarified in ARP1917. 8.4 Dimensions and properties in inch/pound units and the Fahrenheit temperatures are primary; dimensions and properties in SI units and the Celsius temperatures are shown as the approximate equivalents of the primary units and are presented o