典型文献
Strengthening of Ultrafine Lamellar-Structured Martensite Steel via Tempering-Induced Nanoprecipitation
文献摘要：
An ultrafine lamellar-structured martensite steel fabricated by heavy warm rolling(HWR)has shown an excellent combi-nation of strength and ductility.By appending tempering at 400℃to HWR,we show that the comprehensive mechanical property of a lamellar-structured low-carbon martensite steel can be further improved to reach a yield strength of～1.8 GPa,an ultimate tensile strength of～2.0 GPa and a total elongation of～9.3％.This is achieved by tempering the HWR steel from 300 to 750℃,and the optimum tempering temperature is thus obtained.We find that the tempered ultrafine lamellar martensite contains high-density nanoprecipitates dispersed within the aligned martensite laths with reduced crystallographic varia-tions.The ultrahigh strength of the steel is rationalized as mainly the result of grain boundary strengthening and precipitation strengthening,which contribute to yield stress by 610 MPa and 440 MPa,respectively.The good ductility is believed to be closely related to the capacity of the tempered grains to accommodate dense dislocations upon plastic deformation.The pre-sent thermomechanical processing provides a feasible routine for producing steels with ultrahigh-strength and good-ductility.
文献关键词：
中图分类号：
作者姓名：
Xinbo Ji;Liming Fu;Han Zheng;Jian Wang;Hengchang Lu;Wei Wang;Mao Wen;Han Dong;Aidang Shan
作者机构：
School of Materials Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Key Laboratory of High Temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China;Zhejiang Institute of Advanced Materials,Shanghai University,Jiaxing 314113,China;Baowu Steel Research Institute,Baoshan Iron and Steel Co.,Ltd.,Shanghai 201900,China
文献出处：
引用格式：
[1]Xinbo Ji;Liming Fu;Han Zheng;Jian Wang;Hengchang Lu;Wei Wang;Mao Wen;Han Dong;Aidang Shan-.Strengthening of Ultrafine Lamellar-Structured Martensite Steel via Tempering-Induced Nanoprecipitation)[J].金属学报（英文版）,2022(11):1812-1824
A类：
Martensite,Tempering,appending
B类：
Strengthening,Ultrafine,Lamellar,Structured,Steel,via,Induced,Nanoprecipitation,An,ultrafine,lamellar,structured,martensite,fabricated,by,heavy,warm,rolling,HWR,has,shown,excellent,combi,nation,ductility,By,tempering,we,that,comprehensive,property,low,carbon,can,further,improved,reach,yield,GPa,ultimate,tensile,total,elongation,This,achieved,from,optimum,temperature,thus,obtained,We,find,tempered,contains,density,nanoprecipitates,dispersed,within,aligned,laths,reduced,crystallographic,varia,ultrahigh,rationalized,mainly,result,boundary,strengthening,which,contribute,stress,respectively,good,believed,closely,related,capacity,grains,accommodate,dense,dislocations,upon,plastic,deformation,sent,thermomechanical,processing,provides,feasible,routine,producing,steels
AB值：
0.578431
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