1、BSI Standards PublicationBS EN ISO 14577-3:2015Metallic materials Instrumented indentation testfor hardness and materialsparametersPart 3: Calibration of reference blocksBS EN ISO 14577-3:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO14577-3:2015. It s
2、upersedes BS EN ISO 14577-3:2002 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ISE/101/5, Indentation hardness testing.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to
3、 include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 75795 2ICS 77.040.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This
4、British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2015.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14577-3 July 2015 ICS 77.040.10 Supersedes EN ISO 14577-3:2002English Version
5、 Metallic materials - Instrumented indentation test for hardness and materials parameters - Part 3: Calibration of reference blocks (ISO 14577-3:2015) Matriaux mtalliques - Essai de pntration instrument pour la dtermination de la duret et de paramtres des matriaux - Partie 3: talonnage des blocs de
6、rfrence (ISO 14577-3:2015) Metallische Werkstoffe - Instrumentierte Eindringprfung zur Bestimmung der Hrte und anderer Werkstoffparameter - Teil 3: Kalibrierung von Referenzproben (ISO 14577-3:2015) This European Standard was approved by CEN on 16 April 2015. CEN members are bound to comply with the
7、 CEN/CENELEC Internal Regulations 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
8、 Centre or to any CEN member. 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 a
9、s the official versions. 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, Ne
10、therlands, Norway, Poland, 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 2015 CEN All
11、rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 14577-3:2015 EBS EN ISO 14577-3:2015EN ISO 14577-3:2015 (E) 3 European foreword This document (EN ISO 14577-3:2015) has been prepared by Technical Committee ISO/TC 164 “Mechanical testing
12、 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 AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement,
13、 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 some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying
14、any or all such patent rights. This document supersedes EN ISO 14577-3:2002. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic,
15、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, Switzerland, Turkey and the United Kingdom. Endorsemen
16、t notice The text of ISO 14577-3:2015 has been approved by CEN as EN ISO 14577-3:2015 without any modification. BS EN ISO 14577-3:2015ISO 14577-3:2015(E)Foreword vIntroduction vi1 Scope . 12 Normative references 13 Manufacture of reference blocks . 14 Calibrating machine 24.1 General . 24.2 Calibrat
17、ion of the test force 24.3 Verification of the indenter 34.3.1 General 34.3.2 Vickers indenter . 34.3.3 Berkovich, modified Berkovich, corner cube indenters, hardmetal ball indenters, and spherical tipped conical indenters . 44.4 Calibration of the displacement measuring device . 44.5 Verification o
18、f the testing cycle . 55 Calibration procedure . 56 Number of indentations 57 Uniformity of the reference blocks . 58 Marking 69 Validity 7Bibliography 8 ISO 2015 All rights reserved iiiContents PageBS EN ISO 14577-3:2015ISO 14577-3:2015(E)ForewordISO (the International Organization for Standardizat
19、ion) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be r
20、epresented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to d
21、evelop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the
22、ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified durin
23、g the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meani
24、ng of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 164,
25、Mechanical testing of metals, Subcommittee SC 3, Hardness testing.This second edition cancels and replaces the first edition (ISO 14577-3:2002), which has been technically revised.ISO 14577 consists of the following parts, under the general title Metallic materials Instrumented indentation test for
26、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 coatingsiv ISO 2015 All rights reservedBS EN ISO 14577-3:2015ISO 14577-3:2015(E)IntroductionHardne
27、ss 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 deformation under the in
28、denter 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 test force, hardness va
29、lues 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 requirement to measure the indent optically.
30、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. ISO 2015 All rights reserved vBS EN
31、 ISO 14577-3:2015BS EN ISO 14577-3:2015Metallic materials Instrumented indentation test for hardness and materials parameters Part 3: Calibration of reference blocks1 ScopeThis part of ISO 14577 specifies a method for the calibration of reference blocks to use for the indirect verification of testin
32、g machines for the instrumented indentation test as specified in ISO 14577-2:2015.NOTE The reference blocks can be calibrated in accordance with the field of application of the testing machine or with the materials parameters which are being determined.2 Normative referencesThe following documents,
33、in whole or in part, are normatively referenced in 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 Calib
34、ration of force-proving instruments used for the verification of uniaxial testing machinesISO 4287, Geometrical Product Specifications (GPS) Surface texture: Profile method Terms, definitions and surface texture parametersISO 14577-1:2015, Metallic materials Instrumented indentation test for hardnes
35、s and materials parameters Part 1: Test methodISO 14577-2:2015, Metallic materials Instrumented indentation test for hardness and materials parameters Part 2: Verification and calibration of testing machines3 Manufacture of reference blocks3.1 The block shall be specially prepared and the attention
36、of the manufacturer drawn to the requirement to use a manufacturing process that gives the necessary homogeneity, uniformity, and stability of structure.3.2 Each block being calibrated shall be of a thickness not less than 2 mm for the nano range, not less than 5 mm for the micro, and not less than
37、16 mm for the macro range.If it is required by the manufacturing process, the thickness of the reference blocks can be smaller.3.3 The reference blocks shall be free from magnetic forces. It is recommended that the manufacturers ensure that the blocks, if of steel, are demagnetized at the end of the
38、 manufacturing process.3.4 The reference block shall be constructed such that it can be mounted in the testing machine within the tilt limits specified in ISO 14577-1:2015.INTERNATIONAL STANDARD ISO 14577-3:2015(E) ISO 2015 All rights reserved 1BS EN ISO 14577-3:2015ISO 14577-3:2015(E)NOTE If the re
39、ference block is mounted on its bottom, this condition is valid if the maximum deviation in flatness of the test and support faces does not exceed 5 m in 50 mm and the maximum error in parallelism does not exceed 10 m in 50 mm.3.5 The test surface shall be free from scratches that interfere with the
40、 measurement of the indentations. Indentations between scratches are permitted.For the macro and micro range, the surface roughness, Ra, shall not exceed 50 nm and 10 nm respectively for the test surface, and 0,8 m for the support face, the sampling length, l, shall be 0,80 mm (see ISO 4287).For the
41、 nano range, the surface roughness, Ra, shall not exceed 10 nm. It is recommended that the Ra be less than 1 nm to be of practical use for calibration purpose. If measured with an atomic-force-microscope (AMF), the sampling length, l, shall be 10 m.NOTE At the nano range, it is important to consider
42、 the spatial wavelength of the roughness as well as the amplitude.3.6 In order to check that no material has been subsequently removed from the reference block, its thickness at the time of calibration shall be marked on it to the nearest 10 m or an identifying mark shall be made on the test surface
43、 (see Clause 8).For some nano range reference materials, it can be necessary to prepare a surface before the test in a manner that removes surface layers. In this case, a method such as a mark of defined depth should be used to reveal when a significant amount of material has been removed. Certifica
44、tion for nano range indentations can cover reference block depths much less than 10 m.4 Calibrating machine4.1 GeneralIn addition to fulfilling the general conditions specified in ISO 14577-2:2015, the calibrating machine shall also meet the requirements listed in 4.2 to 4.5. The calibrating machine
45、 shall be calibrated and verified directly at intervals not exceeding 24 months. Calibration and verification involves the following:a) calibration of the test force;b) verification of the indenter;c) calibration of the displacement measuring system;d) verification of the testing cycle.The instrumen
46、ts used for verification and calibration shall be traceable to the National Standards, as far as available.4.2 Calibration of the test forceThe test force shall be calibrated according to ISO 14577-2:2015, 4.2, to a tolerance given in the following:a) 0,25 % for the macro range;b) 0,5 % for the micr
47、o range;c) the larger of 0,5 % or 10 N for the nano range.The force shall be measured with elastic force-proving instruments of class 0,5 or better in accordance with ISO 376 or by another method having the same accuracy.2 ISO 2015 All rights reservedBS EN ISO 14577-3:2015ISO 14577-3:2015(E)4.3 Veri
48、fication of the indenter4.3.1 GeneralThe certified measured values (e.g. angle, radius, etc.) of the indenter shall be used in all calculations and, where indentation depth is 6 m, the certified indenter area function with the relative uncertainty of less than 5 % shall be used.In the nano and low m
49、icro ranges (h 1 000 nm), the tolerances on the indenter angles are not normally achieved. The sharpness of the tip is likely to have the most significant impact on the measurement. It is difficult to determine the radius of curvature of an indenter to better than 10 nm as this is likely the radius of an AFM probe. Indentation methods using certified indentation modulus reference blocks are easier for users, but give only a projected area value and so are ambiguous about shape. Due to the important requirement tha
