Static strain aging behavior of ultra low carbon bake hardening steel

被引：85
|
作者：
De, AK
Vandeputte, S
De Cooman, BC
机构：
[1] State Univ Ghent, Lab Iron & Steelmaking, B-9052 Zwijnaarde, Belgium
[2] OCAS NV, Res Ctr, SIDMAR Grp, B-9060 Zelzate, Belgium
来源：
SCRIPTA MATERIALIA | 1999年 / 41卷 / 08期
关键词：
ULC-steel; aging; dislocation; yield phenomena; kinetics;
D O I：
10.1016/S1359-6462(99)00232-8
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Static strain aging in a ultra low carbon bake hardening steel was studied by measuring the changes in upper yield stress due to aging in specimens prestrained up to 10%. A small increase in the yield stress after the first stage of aging occurred, however, at prestrains less than 1% and higher aging temperatures. This might be due to the formation of low temperature carbides of the clustering of solute atoms. The maximum increase in the yield strength due to the atmosphere formation was found to be independent of the degree of prestrain within the range of prestrains studied. The reduced carbon activity or the amount of prestrain did not reflect any influence on the activation energy in the present level.
引用
收藏
页码：831 / 837
页数：7
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