DIN EN ISO 10113-2014 Metallic materials - Sheet and strip - Determination of plastic strain ratio (ISO 10113 2006) German version EN ISO 10113 2014《金属材料 板材和带材 塑性应变比的测定》.pdf

《DIN EN ISO 10113-2014 Metallic materials - Sheet and strip - Determination of plastic strain ratio (ISO 10113 2006) German version EN ISO 10113 2014《金属材料 板材和带材 塑性应变比的测定》.pdf》由会员分享，可在线阅读，更多相关《DIN EN ISO 10113-2014 Metallic materials - Sheet and strip - Determination of plastic strain ratio (ISO 10113 2006) German version EN ISO 10113 2014《金属材料 板材和带材 塑性应变比的测定》.pdf（17页珍藏版）》请在麦多课文档分享上搜索。

1、August 2014 Translation by DIN-Sprachendienst.English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 77.040.10!%:;“2232424www.din.deDDIN EN ISO 10113Metallic materials Sheet and strip Determination of plastic strain ratio (ISO 10113:2006);English version EN ISO 10113:2014,English translation of DIN EN ISO 10113:2014-08Metallische Werkstoffe Blech und Band Bestimmung der senkrechten Anisotropie (IS

3、O 10113:2006);Englische Fassung EN ISO 10113:2014,Englische bersetzung von DIN EN ISO 10113:2014-08Matriaux mtalliques Tles et bandes Dtermination du coefficient danisotropie plastique (ISO 10113:2006);Version anglaise EN ISO 10113:2014,Traduction anglaise de DIN EN ISO 10113:2014-08SupersedesDIN IS

4、O 10113:2009-06www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 17 pages 08.14 DIN EN ISO 10113:2014-08 2 A comma is used as the decimal marker. National foreword This document (EN ISO 10113:2014) has been prepared by Technical Committee

5、 ISO/TC 164 “Mechanical testing of metals”, Subcommittee SC 2 “Ductility testing” (Secretariat: JISC, Japan) and has been taken over without any modification as EN ISO 10113 by Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” (Secretariat: AFNOR, France). The

6、responsible German body involved in its preparation was the Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-01-42 AA Zug- und Duktilittsprfung fr Metalle. Users of this standard should take note of the following: This standard specifies the determ

7、ination of the plastic strain ratio at room temperature. The equations for calculating the plastic strain ratio (Equation 2), the true plastic length strain (Equation 5), the true plastic width strain (Equation 6), the plastic strain (Equation 7) and the true cross-section area (Equation 8) are base

8、d on the assumption that the parallel length of the test piece in the area under evaluation remains prismatic and that there is no formation of a neck or waist. Depending on the material/material condition, waisting along the parallel length of test pieces may occur long before a neck actually is fo

9、rmed. This effect is, in general, still more pronounced at elevated temperatures. For this reason it should be noted that the unrestricted application of the method described in this standard is not possible at elevated temperatures. The r-value is defined in Equation (1) as the ratio of the true pl

10、astic width strain to the true plastic thickness strain in a test piece that has been subjected to uniaxial tensile stress. The true plastic strain (length, width and thickness strain respectively) refer to the dimensions of the test piece before testing (original thickness of the test piece ao, ori

11、ginal gauge width of the test piece bo, and original gauge length of the test piece Lo). In the regression method, the data in the determined range are used to plot a straight line representing the true plastic width strain versus the true plastic length strain through the origin and then to calcula

12、te the r-value from the slope of the straight line using Equation (9). Thus the r-value determined according to this method is an average r-value (based on the data in the determined range) and not the local r-value. For the regression method a value should be used as the lower limit of the plastic

13、(engineering) strain that enables the following conditions to be satisfied: the final testing rate needs to have been reached (this being the rate after the yield/proof strength and yield strength elongation have been determined, i.e. the rate at which the tensile test is generally continued and at

14、which Rmand Ag, for instance, are determined; the plastic (engineering) strain needs to be greater than the yield strength elongation; the measuring data density needs to be constant, as is the case with the upper limit; the reason being that as the data density is initially higher in the tensile te

15、st (i.e. in the elastic region and the region in which the yield strength is determined), the results would otherwise be weighted in favour of the determined range close to the lower limit, especially since there is still a significant relative error of measurement (notably when measuring the change

16、 in width). ISO 6892:1998 cited in this document has been replaced by ISO 6892-1:2009 and adopted as DIN EN ISO 6892-1:2009-12. In Annex A, “E” is given as the Anglo-American symbol denoting “engineering strain”. However the correct symbol from Anglo-American usage is “e”. DIN EN ISO 10113:2014-08 3

17、 The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 6892 DIN EN ISO 6892-1 ISO 9513 DIN EN ISO 9513 Amendments This standard differs from DIN ISO 10113:2009-06 as follows: a) International Standard ISO 10113 has been adopted as European St

18、andard EN ISO 10113; b) the standard has been editorially revised. Previous editions DIN ISO 10113: 2009-06 DIN EN ISO 10113:2014-08 4 National Annex NA (informative) Bibliography DIN EN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature DIN EN ISO 9513, Metall

19、ic materials Calibration of extensometer systems used in uniaxial testing EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 10113 June 2014 ICS 77.040.10 English Version Metallic materials - Sheet and strip - Determination of plastic strain ratio (ISO 10113:2006) Matriaux mtalliques - Tles et

20、 bandes - Dtermination du coefficient danisotropie plastique (ISO 10113:2006) Metallische Werkstoffe - Blech und Band - Bestimmung der senkrechten Anisotropie (ISO 10113:2006) This European Standard was approved by CEN on 6 June 2014. CEN members are bound to comply with the CEN/CENELEC Internal Reg

21、ulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN mem

22、ber. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

23、CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland

24、, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in

25、 any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 10113:2014 EEN ISO 10113:2014 (E) 2 Contents Page Foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Symbols 6 5 Principle . 7 6 Test equipment 7 7 Test piece . 7 8 Procedure . 7 9 Expr

26、ession of results 9 10 Test report 11 Annex A (informative) International comparison of symbols used in the determination of plastic strain ratio 12 Bibliography 13 DIN EN ISO 10113:2014-08EN ISO 10113:2014 (E) 3 Foreword The text of ISO 10113:2006 has been prepared by Technical Committee ISO/TC 164

27、 “Mechanical testing 10113:2014 by Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” the secretariat of which is held by AFNOR. EN ISOof metals” of the International Organization for Standardization (ISO) and has been taken over asThis European Standard shall b

28、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2014, and conflicting national standards shall be withdrawn at the latest by December 2014. Attention is drawn to the possibility that some of the elements of this docum

29、ent may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: A

30、ustria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sw

31、eden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 10113:2006 has been approved by CEN as EN ISO 10113:2014 without any modification. DIN EN ISO 10113:2014-081 Scope This International Standard specifies a method for determining the plastic strain ratio of flat prod

32、ucts (sheet and strip) made of metallic materials. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including

33、any amendments) applies. ISO 6892:1998, Metallic materials Tensile testing at ambient temperature ISO 9513:1999, Metallic materials Calibration of extensometers used in uniaxial testing 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 plastic

34、strain ratio r ratio of the true plastic width strain to the true plastic thickness strain in a test piece that has been subjected to uniaxial tensile stress bar= (1) where a is the true plastic thickness strain; b is the true plastic width strain. NOTE 1 The above expression using a single point is

35、 only valid in the region where the plastic strain is homogeneous. NOTE 2 Since it is easier and more precise to measure changes in length than in thickness, the following relationship derived from the law of constancy of volume is used up to the percentage plastic extension at maximum force, Ag, to

36、 calculate the plastic strain ratio, r. For some materials exhibiting a phase change during plastic deformation, the volume of the measured section cannot always be assumed to be constant. In such cases, the procedure should be defined and agreed between the parties involved. 4Metallic materials She

37、et and strip Determination of plastic strain ratio DIN EN ISO 10113:2014-08EN ISO 10113:2014 (E)ooolnlnbbrL bLb=(2) NOTE 3 Because the value r depends on the orientation of the test piece relative to the rolling direction, as well as on the strain level, the symbol r may be supplemented by the angle

38、 which characterises this orientation and the strain level. For example r45/20(see Table 1). 3.2 weighted average plastic strain ratio r weighted average of the rx/yvalues for different test piece orientations as calculated using the equation 0/20 90/20 45/2024rr rr+= (3) NOTE 1 If r is determined,

39、all tests should be performed at the same strain/strain range. NOTE 2 For some materials, other test piece orientations may be chosen, in which case equations other than Equation (3) should be used. 3.3 degree of planar anisotropy r value calculated using the following equation 0/20 90/20 45/20(2)2r

40、r rr+= (4) NOTE 1 If r is determined, all tests should be performed at the same strain/strain range. NOTE 2 For some materials, other test piece orientations may be chosen, in which case equations other than Equation (4) should be used. 5DIN EN ISO 10113:2014-08EN ISO 10113:2014 (E)4 Symbols The des

41、ignations of the symbols used in this International Standard are given in Table 1. Table 1 Symbols and designations Symbol Designation Unit aoOriginal thickness of the test piece mm boOriginal gauge width of the test piece mm LoOriginal gauge length mm LeExtensometer gauge length mm L Instantaneous

42、elongation/extension of the measurement base mm b Instantaneous width extension mm L Gauge length after straining to a specified plastic elongation/extension mm a Thickness after straining to a specified plastic elongation/extension mm b Gauge width of the test piece after straining to a specified e

43、longation/extension mm epSpecified plastic (engineering) strain at which the plastic strain ratio should be determined (single data point method) % ep epSpecified plastic (engineering) strain range at which the plastic strain ratio should be determined (linear regression method, ep= lower limit of t

44、he plastic strain in percent, ep= upper limit of the plastic strain in percent) % r Plastic strain ratio rx/yPlastic strain ratio in x-direction (in degrees) relative to the rolling direction at plastic strain ep/plastic strain range ep epof y % r Weighted average of rx/yvalues a r Degree of planar

45、anisotropy aTrue plastic thickness strain bTrue plastic width strain lTrue plastic length strain F Force N SoOriginal cross-sectional area of the parallel length mm2S True cross-sectional area mm2 Poissons ratio mESlope of the elastic part of the stress/percentage extension curve multiplied by 100 %

46、 MPa mrSlope of the corresponding straight line of the true plastic width strain vs. true plastic length strain curve AgPercentage plastic extension at maximum force % , , x, y Variables used as subscripts NOTE 1 In the literature, the readers may encounter other symbols: for an international compar

47、ison of symbols, see Annex A. NOTE 2 1 MPa = 1 N/mm2. aIn some countries, rmis used instead of .r6DIN EN ISO 10113:2014-08EN ISO 10113:2014 (E)5 Principle A test piece is subjected to a tensile test to a specified plastic strain level and the plastic strain ratio, r, is calculated from measurements

48、of the changes in length and width. The orientation of the test piece relative to the rolling direction, and the plastic strain level for which the values of r are determined, are as specified in the relevant product standard. As a rule, the strain level shall be lower than the plastic extension at maximum force. 6 Test equipment The tensile testing machine used shall comply with the requirements of ISO 6892. For the manual method, the device for the measurement