DIN EN ISO 14577-2-2015 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2 Verification and calibration of testing machines (ISO 1457.pdf

1、November 2015 English price group 15No 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 19.060; 77.040.10!%GN=“2364326w

2、ww.din.deDIN EN ISO 14577-2Metallic materials Instrumented indentation test for hardness and materials parameters Part 2: Verification and calibration of testing machines (ISO 14577-2:2015);English version EN ISO 14577-2:2015,English translation of DIN EN ISO 14577-2:2015-11Metallische Werkstoffe In

3、strumentierte Eindringprfung zur Bestimmung der Hrte und anderer Werkstoffparameter Teil 2: berprfung und Kalibrierung der Prfmaschinen (ISO 14577-2:2015);Englische Fassung EN ISO 14577-2:2015,Englische bersetzung von DIN EN ISO 14577-2:2015-11Matriaux mtalliques Essai de pntration instrument pour l

4、a dtermination de la duret et de paramtres des matriaux Partie 2: Vrification et talonnage des machines dessai (ISO 14577-2:2015);Version anglaise EN ISO 14577-2:2015,Traduction anglaise de DIN EN ISO 14577-2:2015-11SupersedesDIN EN ISO 14577-2:2003-05www.beuth.deDocument comprises 33 pagesDTranslat

5、ion by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.11.15 DIN EN ISO 14577-2:2015-11 2 A comma is used as the decimal marker. National foreword This document (EN ISO 14577-2:2015) has been prepared by Technical Committee ISO/TC 164 “Mechanical t

6、esting of metals”, Subcommittee SC 3 “Hardness testing” (Secretariat: DIN, Germany) in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” (Secretariat: AFNOR, France) in accordance with the agreement on technical cooperation between ISO and CE

7、N (Vienna Agreement). The responsible German body involved in its preparation was the DIN-Normenausschuss Materialprfung (DIN Standards Committee Materials Testing), Working Committee NA 062-01-41 AA Hrteprfung fr Metalle. EN ISO 14577 consists of the following parts, under the general title Metalli

8、c materials Instrumented indentation test for hardness and materials parameters: Part 1: Test method Part 2: Verification and calibration of testing machines Part 3: Calibration of reference blocks Part 4: Test method for metallic and non-metallic coatings The DIN Standards corresponding to the Inte

9、rnational Standards referred to in this document are as follows: ISO 376 DIN EN ISO 376 ISO 6508-2 DIN EN ISO 6508-2 ISO 14577-1 DIN EN ISO 14577-1 ISO 14577-3 DIN EN ISO 14577-3 ISO 14577-4 DIN EN ISO 14577-4 ISO 3878 DIN ISO 3878 ISO/IEC 17025 DIN EN ISO/IEC 17025 Amendments This standard differs

10、from DIN EN ISO 14577-2:2003-05 as follows: a) a differentiation is made between calibration and direct and indirect verification; individual procedures are specified, as are intervals between calibrations and verifications; b) verfication and calibration methods are specified and evaluated, particu

11、larly those relating to area function and machine compliance; c) the use of reference materials, certified reference materials (CRM) and certified indenters is specified; d) the standard has been editorially revised. Previous editions DIN 50359-2: 1999-04 DIN EN ISO 14577-2: 2003-05 DIN EN ISO 14577

12、-2:2015-11 3 National Annex NA (informative) Bibliography DIN EN ISO 376, Metallic materials Calibration of extensometer systems used in uniaxial testing DIN EN ISO 6508-2, Metallic materials Rockwell hardness test Part 2: Verification and calibration of testing machines and indenters DIN EN ISO 145

13、77-1, Metallic materials Instrumented indentation test for hardness and materials parameters Part 1: Test method DIN EN ISO 14577-3, Metallic materials Instrumented indentation test for hardness and materials parameters Part 3: Calibration of reference blocks DIN EN ISO 14577-4, Metallic materials I

14、nstrumented indentation test for hardness and materials parameters Part 4: Test method for metallic and non-metallic coatings DIN ISO 3878, Hardmetals Vickers hardness test DIN EN ISO/IEC 17025, General requirements for the competence of testing and calibration laboratories DIN EN ISO 14577-2:2015-1

15、1 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14577-2 July 2015 ICS 77.040.10 Supersedes EN ISO 14577-2:2002English Version Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 2: Verification and calibration

16、of testing machines (ISO 14577-2:2015) Matriaux mtalliques - Essai de pntration instrument pour la dtermination de la duret et de paramtres des matriaux - Partie 2: Vrification et talonnage des machines dessai (ISO 14577-2:2015) Metallische Werkstoffe - Instrumentierte Eindringprfung zur Bestimmung

17、der Hrte und anderer Werkstoffparameter - Teil 2: berprfung und Kalibrierung der Prfmaschinen (ISO 14577-2:2015) This European Standard was approved by CEN on 16 April 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this Europ

18、ean 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 member. This European Standard exists in three official versions

19、 (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. CEN members are the national standards bodies of Austria, Bel

20、gium, 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, Sweden, Switz

21、erland, 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 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationa

22、l Members. Ref. No. EN ISO 14577-2:2015 EContents Page European foreword 3Introduction . 4 1 Scope 5 2 Normative references . 5 3 General conditions . 5 3.1 Preparation 5 3.2 Functional installation . 5 3.3 Indenter . 6 3.4 Application of the test force 6 4 Direct verification and calibration . 6 4.

23、1 General 6 4.2 Calibration of the test force 6 4.3 Calibration of the displacement measuring device . 7 4.4 Verification and calibration of the machine compliance 8 4.4.1 General 8 4.4.2 Procedure . 8 4.5 Calibration and verification of the indenter 9 4.5.1 General 9 4.5.2 Vickers indenter . 9 4.5.

24、3 Berkovich, modified Berkovich, and corner cube indenters . 11 4.5.4 Hard metal ball indenters . 12 4.5.5 Spherical tipped conical indenters . 13 4.6 Verification of the indenter area function . 14 4.6.1 General 14 4.6.2 Procedure . 14 4.7 Verification of the testing cycle . 14 5 Indirect verificat

25、ion 15 5.1 General 15 5.2 Procedure . 16 6 Intervals between calibrations and verifications 18 6.1 Direct verification and calibration . 18 6.2 Indirect verification 19 6.3 Routine checking 19 7 Verification report/Calibration certificate 19 Annex A (informative) Example of an indenter holder . 20 A

26、nnex B (normative) Procedures for determination of indenter area function . 21 Annex C (informative) Examples for the documentation of the results of indirect verification 23 Annex D (normative) Machine compliance calibration procedure . 25 Bibliography . 29 EN ISO 14577-2:2015 (E) 2 DIN EN ISO 1457

27、7-2:2015-11 European foreword This document (EN ISO 14577-2:2015) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing of metals” in collaboration with Technical Committee ECISS/TC 101 “Test methods for steel (other than chemical analysis)” the secretariat of which is held by AFNO

28、R. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2016, and conflicting national standards shall be withdrawn at the latest by January 2016. Attention is drawn to the possibility that som

29、e of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 14577-2:2002. According to the CEN-CENELEC Internal Regulations, the national standards organization

30、s of the following countries are bound to implement this European Standard: 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,

31、Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14577-2:2015 has been approved by CEN as EN ISO 14577-2:2015 without any modification. EN ISO 14577-2:2015 (E) 3 DIN EN ISO 14577-2:2015-1

32、1 IntroductionHardness has typically been defined as the resistance of a material to permanent penetration by another harder material. The results obtained when performing Rockwell, Vickers, and Brinell tests are determined after the test force has been removed. Therefore, the effect of elastic defo

33、rmation under the indenter has been ignored.ISO 14577 (all parts) has been prepared to enable the user to evaluate the indentation of materials by considering both the force and displacement during plastic and elastic deformation. By monitoring the complete cycle of increasing and removal of the tes

34、t force, hardness values equivalent to traditional hardness values can be determined. More significantly, additional properties of the material, such as its indentation modulus and elasto-plastic hardness, can also be determined. All these values can be calculated without the need to measure the ind

35、ent optically. Furthermore, by a variety of techniques, the instrumented indentation test allows to record hardness and modulus depth profiles within a, probably complex, indentation cycle.ISO 14577 (all parts) has been written to allow a wide variety of post test data analysis.EN ISO 14577-2:2015 (

36、E) 4 DIN EN ISO 14577-2:2015-11 1 ScopeThis part of ISO 14577 specifies the method of verification and calibration of testing machines for carrying out the instrumented indentation test in accordance with ISO 14577-1:2015.It describes a direct verification method for checking the main functions of t

37、he testing machine and an indirect verification method suitable for the determination of the repeatability of the testing machine. There is a requirement that the indirect method be used in addition to the direct method and for the periodic routine checking of the testing machine in service.It is a

38、requirement that the indirect method of verification of the testing machine be carried out independently for each test method.This part of ISO 14577 is also applicable for transportable testing machines.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in

39、 this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 376, Metallic materials Calibration of force-proving instruments used for the v

40、erification of uniaxial testing machinesISO 3878, Hardmetals Vickers hardness testISO 14577-1:2015, Metallic materials Instrumented indentation test for hardness and materials parameters Part 1: Test methodISO 14577-3, Metallic materials Instrumented indentation test for hardness and materials param

41、eters Part 3: Calibration of reference blocks3 General conditions3.1 PreparationThe machine shall be designed in such a way that it can be verified.Before verification and calibration of the testing machine, it shall be checked to ensure that the conditions laid down in 3.2 to 3.4 are met.3.2 Functi

42、onal installationThe testing machine shall be configured to operate in compliance with and shall be installed in an environment that meets the requirements of this part of ISO 14577, ISO 14577-1:2015, and, where applicable, ISO 14577-3. The testing machine shall be protected from vibrations. For tes

43、ting in the EN ISO 14577-2:2015 (E) 5 DIN EN ISO 14577-2:2015-11 micro and nano ranges, the testing machine shall also be protected from air currents and temperature fluctuations.The influence of environment on the data, i.e. the noise floor, shall be estimated by performing a low force (e.g. equiva

44、lent to the usual initial contact force) indentation on a CRM and analysing the displacement over time. The force variability is the indent stiffness (obtained from force removal curve) multiplied by the standard deviation of the displacement once any background drift in mean displacement has been s

45、ubtracted. These uncertainties shall then be included in the total combined uncertainty tests as calculated in ISO 14577-1:2015, Clause 8 and Annex H.3.3 IndenterIn order to get repeatable measurements of the force/indentation depth data set, the indenter holder shall be firmly mounted into the test

46、ing machine.The indenter holder should be designed in such a way that the contribution to the overall compliance is minimized (see Annex A).3.4 Application of the test forceThe test force shall be applied and removed without shock or vibration that can significantly affect the test results. It shall

47、 be possible to verify the process of increasing, holding, and removal of the test force.4 Direct verification and calibration4.1 General4.1.1 Direct verification and calibration shall be carried out at the constant temperature of use, typically 10 C to 35 C, but preferably in the range (23 5) C. If

48、 a range of operating temperatures is required, then direct calibration and verification should be carried out at suitable points over that temperature range to determine the calibration validity as a function of temperature. If necessary, a calibration correction function or a set of calibrations v

49、alid at specific operating temperatures can be determined.4.1.2 The instruments used for direct calibration and verification shall be traceable to National Standards as far as available.4.1.3 Direct verification and calibration involvesa) calibration of the test force,b) calibration of the displacement measuring device,c) verification and calibration of the machine compliance,d) verification of the indenter