Revealing effect of aluminum alloying on work hardening and impact behaviors of low-density Fe-18Mn-1.3C-2Cr-(4,11)Al casting steel

作     者：Zhi-bin Zheng Hao-kun Yang A.P.Shatrava Wai-wah Lai Jun Long Kai-hong Zheng Zhi-bin Zheng;Hao-kun Yang;A.P.Shatrava;Wai-wah Lai;Jun Long;Kai-hong Zheng

作者机构：Institute of New MaterialsGuangdong Academy of SciencesGuangdong Provincial Key Laboratory of Metal Toughening Technology and ApplicationGuangzhou 510650China Smart Manufacturing DivisionHong Kong Productivity CouncilHong Kong 999077China Physicotechnological Institute of Metals and AlloysNational Academy of SciencesKiev 03142Ukraine National Engineering Research Center of Powder Metallurgy of Titanium&Rare MetalsGuangdong Provincial Iron Matrix Composite Engineering Research CenterGuangzhou 510650China 

出 版 物：《China Foundry》 (中国铸造（英文版）)

年 卷 期：2022年第19卷第4期

页      面：359-368页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：This work was financially supported by the Guangdong Province Key Area R&D Program(Grant No.2020B0101340004) the International Science and Technology Cooperation Project of Guangdong Province(Grant No.2021A0505030051) the Innovation and Technology Fund(ITF)(Grant No.ITP/020/21AP) the Young Talent Support Project of Guangzhou Association for Science and Technology(Grant No.QT20220101075) the GDAS'Project of Science and Technology Development(Grant No.2022GDASZH-2022010103) 

主　　题：casting steel aluminum work hardening impact toughness tensile fractography impact fractography 

摘      要：The present study designed two kinds of Fe-18Mn-1.3C-2Cr-(4,11)Al(wt.%)low-density *** and impact tests were carried out to evaluate the work hardening and impact toughness properties via aluminum(Al)alloying ***,microstructure evolution and fracture morphology were investigated by X-ray diffraction(XRD),a scanning electron microscope(SEM)equipped with electron backscatter diffraction(EBSD),a transmission electron microscope(TEM),and a stereo-optical microscope(OM).It is found that the Al addition obviously promotes the dislocation planar slipping,resulting in cleavage and brittle impact fracture in 11wt.%Al ***,the microband-induced plasticity(MBIP)mechanism is found in 4wt.%Al containing steel,introducing considerable work hardening capacity and impact toughness of 156.8±17.4 *** present study provides a direct illustration of the relationship between work hardening and impact toughness behaviors of these two low-density steels for potential application as impact-resistant components.