Investigation of Cold Forming Cracking Defect of High-Strength Vehicle Structural Steel

DOI

10.2991/ame-17.2017.56How to use a DOI?

Keywords

high-strength vehicle structural steel; cold bending forming; crack; liquation TiN; TiC precipitate.

Abstract

Abstract:The reason of high-strength vehicle structural steel cracked during cold bending was investigated. The large liquation TiN distributed in grain and the group gathered by multiple liquation TiN can be origin of crack, the mismatching of forming mould leads to large processing stress thereby causing cracking, the metallographic structure showing blurry grain boundaries and cementites gathered there restrains crack propagation hardly, thereby intergranular fracture occurs easily, the fracture morphology characterizes cleavage fracture, macroscopic appearance is brittle fracture.

Copyright

© 2017, 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  - Kai-Yu Cui
AU  - Xiao-Yu Ye
AU  - Zheng-Rong Li
AU  - Xue-Gang Xiong
PY  - 2017/04
DA  - 2017/04
TI  - Investigation of Cold Forming Cracking Defect of High-Strength Vehicle Structural Steel
BT  - Proceedings of the 3rd Annual International Conference on Advanced Material Engineering (AME 2017)
PB  - Atlantis Press
SP  - 337
EP  - 342
SN  - 2352-5401
UR  - https://doi.org/10.2991/ame-17.2017.56
DO  - 10.2991/ame-17.2017.56
ID  - Cui2017/04
ER  -