Influence of Quenching Temperature on Microstructure and Properties of 40Cr Steel by Zero Time Holding quenching

摘要：

The effect of quenching temperature on the microstructure and mechanical properties of 40Cr steel by zero time holding quenching were studied. The results showed that the strength and hardness of 40Cr steel increased with the increase of quenching temperature in the range of 860~940°C, the strength and hardness reach the maximum at 920°C and then decrease. The metallographic analysis shows austenite grains of the samples by Zero Time Holding Quenching have been refined compared with the traditional heat treatment technology. Fine lath martensite was obtained by the zero time holding quenching due to the smaller austenitic crystal grain and the uneven distribution of the carbon concentration in austenitic crystal grain.

关键词： 40Cr steel Zero time holding quenched Tensile strength Hardness Microstructure

作者: A.M.Li M.J.Hu

作者单位: School of Materials Science & Engineering,Henan Polytechnic University, Jiaozuo 454000, China

会议类型: 国际会议

会议名称: 2011 Global Conference on Digital Design and Manufacturing Technology(2011年全国数字设计与制造技术会议)

会议地点: 杭州

会议语种:英文

页码: 25-28

在线出版日期: 2011-01-23（万方平台首次上网日期，不代表论文的发表时间）