Effects of PWHT on Microstructure and Mechanical Properties of A516 Gr.70

2018 1st International Conference on Environment Prevention and Pollution Control Technology

生态环境科学

Qin, Liye^1 ; Zou, Yang^1,2 ; Zhang, Xinyu^1

Shougang Research Institute of Technology, Beijing, China^1

Beijing Key Laboratory of Green Recyclable Process for Iron and Steel Production Technology, Beijing, China^2

关键词: Composition design;    High carbon content;    Low carbon;    Microstructure and mechanical properties;    Post weld heat treatment;    Pressure vessel steels;    Properties and microstructures;    Standard requirements;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/199/3/032005/pdf
DOI  :  10.1088/1755-1315/199/3/032005

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The article describes the effect of simulated post weld heat treatment (PWHT) on the properties and microstructure of high performance pressure vessel steel plate A516 Gr.70. The research indicates that the strength decreased sharply and the toughness is decreased slightly with increasing simulated PWHT times. And the strength of plate with high carbon content decrease more than which with low carbon content. The main reason of strength decrease is the ferrite degenerated after simulated PWHT. However, the strength can still satisfy the standard requirement with the reasonable composition design.