100Cr6轴承钢热变形行为及组织研究  

Study of Thermal Deformation Behavior and Organization of 100Cr6 Bearing Steel

作　　者：马帅 陈克飞[1] 何晓庆 李灿 Ma Shuai;Chen Ke-fei;He Xiao-qing;Li Can(Hunan University of Arts and Sciences Furong College,Hunan Changde 415000)

机构地区：[1]湖南文理学院芙蓉学院,湖南常德415000

出　　处：《内燃机与配件》2023年第5期55-58,共4页Internal Combustion Engine & Parts

基　　金：湖南省教育厅科学研究基金资助项目(20C1278);湖南文理学院科学研究资助项目(21YB01)。

摘　　要：利用Gleeble-3500热模拟试验机研究了100Cr6轴承钢在变形温度为850~1150℃、应变速率为0.01~10s^(-1)条件下的热变形行为。具体分析了应变速率和变形温度对100Cr6轴承钢微观组织的影响,并对组织进行了能谱分析和面扫描分析。结果表明,在相同的应变速率下,流变应力随着温度的升高而降低,马氏体的形态由细晶状长大到针叶粗大状;而在相同的变形温度下,流变应力随着应变速率的升高而增大。当应变速率为0.1s^(-1)时,在850℃和950℃压缩变形时,发生了动态回复软化;而在1050℃和1150℃热压缩变形时,加工硬化的软化机理为动态再结晶。The thermal deformation behavior of 100Cr6 bearing steel at deformation temperatures of 850~1150°C and strain rates of 0.01~10s^(-1)was investigated using a Gleeble-3800 thermal simulation tester.The effects of strain rate and deformation temperature on the microstructure of 100Cr6 bearing steel were specifically analyzed,and the organization was analyzed by energy spectrum and surface scan analysis.The results showed that at the same strain rate,the rheological stress decreased with the increase of temperature,and the morphology of martensite grew from fine-grained to acicular coarse;while at the same deformation temperature,the rheological stress increased with the increase of strain rate,.At a strain rate of 0.1s^(-1),dynamic reversion softening occurred at 850°C and 950°C compressive deformation,while at 1050°C and 1150°C hot compressive deformation,the softening mechanism of work-hardening was dynamic recrystallization.

关 键 词：100Cr6轴承钢 流变应力 组织研究 热压缩变形 动态再结晶 

分 类 号：TG142[一般工业技术—材料科学与工程]