ISO INTERNATIONAL STANDARD 4499-3 First edition 2016-02-15 Hardmetals - Metallographic determination of microstructure Part 3: Measurement of microstructural features in Ti (C, N) and WC/cubic carbide based hardmetals Métaux-durs - Détermination meétallographique de la microstructure- Partie3:Mesuredescaracteristiguesdesmicrostructuresdesmetaux durs a base de carbures Ti (C, N) et WC/cubiques Reference number IS0 4499-3:2016(E) ISO International Organization for Standardization @ IS0 2016 STANDARDIZATIONC15956617 ed without license from IHS IS0 4499-3:2016(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Intenatinair PrganizationforStandardization icensee-ZHEJIANG INST OF STANDARDIzAoISQ3.6 -All rights reserved etworking permitted without license from IHS IS0 4499-3:2016(E) Contents Page Foreword ..iv Introduction. 1 Scope 2 Normative references 3 Terms and definitions 4 Symbols and units ..2 5 Principle. ..3 6 Apparatus. ..3 7 Calibration ..4 8 Preparation of test samples ..4 8.1 Metallographic preparation 8.2 Ti(C, N) based hardmetals - cermets. ..4 8.3 WC/Cubic carbide based hardmetals. .8 9 Procedure for characterisation of structures 20 9.1 Sampling of images of structure 20 9.1.1 General. 20 9.1.2 Representative selection 20 9.1.3 Determination of homogeneity of hard phase sizes 20 9.1.4 Inhomogeneous materials 21 9.2 Phase size measurement 21 9.2.1 General. .21 9.2.2 Phase measurement by intercepts 21 10 Uncertainty of measurement. ..23 11 Test report. .23 Bibliography .25 iii See=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under lic ithout license from IHS Not for Resale, 2016/4/26 02:17:22