Modulating Mechanical Properties of Fe-0.35C-3.2Al-5Mn Hot-Rolled Steel by Combining Twinning-Induced Plasticity plus Transformation-Induced Plasticity Effect

被引：2

作者：

Lv, Chao ^{[1
]}

Huang, Xingmin ^{[1
]}

Wang, Yanhua ^{[1
]}

Fu, Qinqin ^{[2
,3
]}

Zhang, Juan ^{[4
]}

Wu, Min ^{[5
]}

机构：

[1] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Adv Technol Mat, Chengdu 610031, Peoples R China

[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Ctr Adv Mat Performance Nanoscale CAMP Nano, Xian 710049, Peoples R China

[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Hysitron Appl Res Ctr China HARCC, Xian 710049, Peoples R China

[4] Southwest Jiaotong Univ, Sch Mech & Engn, Appl Mech & Struct Safety Key Lab Sichuan Prov, Chengdu 610031, Peoples R China

[5] Zhejiang Univ Technol, Coll Mat Sci & Engn, Hangzhou 310014, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2022年 / 93卷 / 05期

关键词：

intercritical annealing; medium-manganese steel; transformation-induced plasticity; twinning-induced plasticity; MEDIUM-MN STEELS; DEFORMATION-BEHAVIOR; AUSTENITE STABILITY; RETAINED AUSTENITE; STRAIN-RATE; MICROSTRUCTURAL EVOLUTION; ULTRAHIGH STRENGTH; TENSILE BEHAVIOR; STACKING-FAULT; TRIP STEELS;

D O I：

10.1002/srin.202100534

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The microstructures and mechanical properties of Fe-0.35C-3.2Al-5Mn (in wt%, same later) hot-rolled medium-manganese steels are systematically investigated. The results show that ultrafine-grained duplex phases with bimodal morphologies of lath and equiaxed are obtained with intercritical annealing at 750 degrees C for 1 h, along with ultimate tensile strength of 950 MPa and total elongation of 71.2%, attributed to the dislocation slip and deformation of ferrite matrix, accompanied by the synergetic twinning of retained austenite plus transformation of retained austenite to martensite. The newly developed medium-manganese steels, which exhibit an excellent product of ultimate tensile strength and total elongation of 67.6 GPa center dot%, demonstrate great practical applications.

引用

页数：6

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