Influence of carbon addition on mechanical properties of Fe-Mn-C twinning-induced plasticity steels
作者机构：School of EngineeringJiangxi Agricultural UniversityNanchang 330045JiangxiChina Institute of New MaterialsGuangdongAcademy of SciencesGuangdong Provincial iron Matrix Composite Engineering Research CenterGuangzhou 510650GuangdongChina Smart Manufacturing DivisionHong Kong Productivity CouncilHong Kong 999077.China
出 版 物：《Journal of Iron and Steel Research International》 (Journal of Iron and Steel Research, International)
年 卷 期：2022年第29卷第9期
页 面：1446-1454页
核心收录：
学科分类：0806[工学-冶金工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）]
基 金：supported by International Science and Technology Cooperation Project of Guangdong Province(No.2021A0505030051) Guangdong Academy of Science(No.2021 GDASYL-20210102002)
主 题：Twinning induced plasticity steel Work-hardening rate Dynamic strain aging Short-range order Deformation twin
摘 要：Mechanical properties and microstructural evolution of Fe-22Mn-0.6C and Fe-22Mn-1.0C(wt.%)twinning-induced plasticity(TwIP)steels were investigated by monotonic,stress-relaxation and unloading-reloading tensile *** dynamic strain aging(DSA)effect,resulting from pinning of dislocations,effectively improved the dislocation activation volume of the two TWIP *** the meanwhile,DSA-facilitated twinning nucleation mechanism kept similar twinning capabilities of the two TWIP *** strain increasing,the formation of high-density deformation twins restricted the dislocation motion and reduced the activation volume with increasing ***,C addition simultaneously improved the ultimate tensile strength and uniform elongation,and significantly enhanced the friction stress,rather than back *** stronger short-range order effect,brought by friction stress,promotes the planar dislocation slipping,thus improving the work-hardening *** a result,the additional work-hardening capacity can be achieved in Fe-Mn-C with higher C addition.
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