摘要
采用显微组织观察、XRD、硬度测试、冲击磨损试验等研究了不同冷轧压下率(15%~55%)对ZGMn18Cr2钢组织与性能的影响。结果表明:经1120℃×2 h水韧处理的ZGMn18Cr2钢为均匀的奥氏体组织,晶粒呈等轴状。随着冷轧压下率的增加,钢的晶粒不断沿着轧制方向被拉长,变形带逐渐增多,位错密度逐渐增大,硬度逐渐增加,耐磨性能逐渐提高。与未冷轧的ZGMn18Cr2钢相比,冷轧压下率55%的钢硬度提高了131.5%,冲击磨损质量损失降低了37.3%。
The effect of different cold rolling reduction rates(15%-55%)on the microstructure and properties of ZGMn18Cr2 steel was studied by means of microstructure observation,XRD,hardness test and impact wear test.The results show that ZGMn18Cr2 steel treated with water toughening at 1120℃×2 h has uniform austenitic structure and equiaxed grains.With the increase of cold rolling reduction rate,the grain of the steel is constantly elongated along the rolling direction,and the deformation zone is gradually increased,the dislocation density is gradually increased,and the hardness and wear resistance of the steel are gradually increased.Compared with those of ZGMn18Cr2 steel without cold rolling,the hardness of the steel with cold rolling reduction rate of 55%is increased by 131.5%,and the mass loss of impact grinding is decreased by37.3%.
作者
秦驰越
QIN Chiyue(School of Mechanical Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,China;Department of Mechanical Engineering,Baotou Railway Vocational and Technical College,Baotou 014060,China)
出处
《热加工工艺》
北大核心
2023年第21期142-144,共3页
Hot Working Technology
基金
内蒙古自治区高等学校科学研究项目(NJSY19351)。
关键词
ZGMn18Cr2钢
冷轧压下率
组织
硬度
耐磨性
ZGMn18Cr2 steel
cold rolling reduction rate
microstructure
hardness
wear resistance
