Discussion on the heat treatment process of cold rolled Q345 steel in laboratory
ZHANG Ming-ya, LIU Ji-yuan, ZHU Fu-xian, MA Shi-cheng
State Key Lab of Rolling and Automation,Northeastern University,Shenyang 110819,China
Abstract:
A new kind of DP steel with about 40% martensite in matrix was developed from cold rolled Q345 steel by continuous annealing simulation.Microstructure and mechanical properties obtained by conventional heat treatment certified that the microstructure matrix is composed of ferrite,pearlite and martensite,the samples exhibited high tensile strength and low yield ratio,however,the elongation is very low,only about 10%.Due to the high carbon content,low soaking temperature and relatively higher rapid cooling start temperature should be adopted for the new process.
Key words: continuous annealing high-strength steel microstructure mechanical property
DOI：10.11916/j.issn.1005-9113.2011.06.019
Clc Number:TG161
Fund:
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Discussion on the heat treatment process of cold rolled Q345 steel in laboratory
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Discussion heat treatment process cold
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