Crack Analysis of W6Mo5Cr4V2 Thread Rolling Roll

DOI

10.2991/ifeesm-17.2018.134How to use a DOI?

Keywords

W6Mo5Cr4V2; Thread rolling roll; Crack analysis

Abstract

Microstructure and facture morphology of the W6Mo5Cr4V2 steel were investigated by optical microscope (OM), scanning electron microscope(SEM) and Rockwell hardness tester , in order to figure out the reasons of brittle fracture and crack. They show that the carbides inhomogeneity is very serious and the carbides distributed together in the both samples. The microstructure of the both samples are composed of tempered martensite and carbides. However, due to overheating, serious carbides network, angular carbides and other eutectic structure grow. The results show there is overheating phenomenon during the heat treatment process. Crack formed under the action of thermal stress W6Mo5Cr4V2 thread rolling rolls result in brittle fracture. They extend under the action of thermal stress and finally. S1 break up into three parts caused by external stress.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Xiaoxiao Pang
AU  - Nan Li
AU  - Zhiqiang Luo
PY  - 2018/02
DA  - 2018/02
TI  - Crack Analysis of W6Mo5Cr4V2 Thread Rolling Roll
BT  - Proceedings of the 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017)
PB  - Atlantis Press
SP  - 719
EP  - 722
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-17.2018.134
DO  - 10.2991/ifeesm-17.2018.134
ID  - Pang2018/02
ER  -