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The relationship between microstructure and stress-strain behavior in tension in high strength pipeline steel
被引：0
作者：
CUI Tiancheng
机构：
关键词：
high strength pipeline steel;
tension;
stress-strain behavior;
microstructure;
D O I：
暂无
中图分类号：
TG142.15 [];
学科分类号：
080502 ;
摘要：
In this paper the relationship between microstructure and stress-strain behavior in tensile test of high strength pipeline steel was investigated.The steel with polygonal ferrite-bainite(PF + B) microstructure has a "round-house" type tensile stress-strain curve with low Y/T ratio,highly uniform elongation and high n-value,which means PF + B microstructure has the best deformability(i.e.Ideal stress-strain behavior) among the four microstructures.The steel with acicular ferrite-martensite&austenite(AF + MA) microstructure has a "continuous-yielding" type tensile stress-strain curve,whose deformability is worse than that of PF + B microstructure.Both the steels of polygonal ferrite-acicular ferrite(PF + AF) and polygonal ferrite-pearlite (PF+P) microstructure have "luders elongation" type tensile stress-strain curve with high Y/T ratio,low uniform elongation and low n-value,which means PF + AF and PF + P microstructures have the worst deformability among the four microstructures.
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页码：57 / 57
页数：1
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