典型文献
Roles of nanoscale precipitates and metastable austenite in determining strength and toughness of high-strength Nb-bearing steel
文献摘要：
The effects of tempering temperature on the microstructure and mechanical properties of high-strength structural steel containing niobium were investigated to examine the roles of nanoscale precipitates and metastable austenite in deter-mining the yield strength and toughness.After hot-rolling and quenching,three experimental steels were tempered at 590,630,and 670℃.During tempering,nanoscale Nb(C,N)precipitates were formed with the recovery of quenched martensite.The average diameters of Nb(C,N)precipitates increased from 5.4 to 8.2 nm as the tempering temperature was increased.Notably,reversed austenite with a volume fraction of 9％was formed at tempering temperatures up to 670℃.The yield strengths of steel containing tempered martensite tempered at 590 and 630℃ were 965 and 831 MPa,and the tensile strengths were 998 and 879 MPa,respectively.However,the steel comprising reversed austenite and tempered martensite tempered at 670℃ showed continuous yielding behavior,affording yield and tensile strengths of 610 and 889 MPa,respectively.The impact energy increased from 105 to 260 J at-60℃ with increasing tempering temperature.Reversed austenite improves low-temperature toughness by significantly increasing the crack propagation energy.
文献关键词：
中图分类号：
作者姓名：
Qi-bin Ye;Cheng Zhou;Jun Hu;Xiao-Ian Gong;Yong Tian;Xiu-hua Gao;Zhao-dong Wang
作者机构：
State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,Liaoning,China
文献出处：
引用格式：
[1]Qi-bin Ye;Cheng Zhou;Jun Hu;Xiao-Ian Gong;Yong Tian;Xiu-hua Gao;Zhao-dong Wang-.Roles of nanoscale precipitates and metastable austenite in determining strength and toughness of high-strength Nb-bearing steel)[J].钢铁研究学报（英文版）,2022(10):1646-1658
A类：
B类：
Roles,nanoscale,precipitates,metastable,austenite,determining,toughness,high,Nb,bearing,effects,tempering,microstructure,mechanical,properties,structural,containing,niobium,were,investigated,examine,roles,After,hot,rolling,quenching,three,experimental,steels,tempered,During,formed,recovery,quenched,martensite,average,diameters,increased,from,was,Notably,reversed,volume,fraction,temperatures,up,strengths,tensile,respectively,However,comprising,showed,continuous,yielding,behavior,affording,impact,energy,increasing,Reversed,improves,low,by,significantly,crack,propagation
AB值：
0.423362
相似文献
机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
