Effect of austenitizing temperature on quenching microstructure and properties of 51CrV4 steel
ZHANG Xiao-dong1, XIA Dian-xiu1, WANG Shou-ren1, ZHANG Yun-shan2
(1. School of Mechanical Engineering, University of Jinan, Jinan 256410, Shandong, China;
2. Shandong Automobile Spring Factory Zibo Co.,Ltd., Zibo 256410, Shandong, China)
Abstract:In order to find out the optimum austenitizing temperature and the best comprehensive mechanical properties of 51CrV4 steel,the effects of austenitizing temperature on the quenching microstructure and properties of 51CrV4 steel were studied. The results show that with the increase of austenitizing temperature,the austenite grains gradually grow and the hardness increases first and then decreases,and the strength after tempering at 460 ℃ increases first and then decreases. When the austenitizing temperature is 880 ℃,the austenite grains are fine and uniform,the martensite structure is dense,the strength and hardness reach maximum. When the austenitizing temperature reaches 910 ℃,the decarburization phenomenon is obvious,and the strength,hardness and plasticity of the test steel decrease obviously. The research shows that in order to ensure uniform grain size and no decarburization under the premise of complete austenitization,the best austenitizing temperature of 51CrV4 steel for good performance is 880 ℃.
张晓东, 夏佃秀, 王守仁, 张云山. 奥氏体化温度对51CrV4钢淬火组织和性能的影响[J]. 钢铁, 2019, 54(3): 76-81,95.
ZHANG Xiao-dong1, XIA Dian-xiu1, WANG Shou-ren1, ZHANG Yun-shan2. Effect of austenitizing temperature on quenching microstructure and properties of 51CrV4 steel. Iron and Steel, 2019, 54(3): 76-81,95.
Zhang S S, Li M Q, Liu Y G, et al. .The growth behavior of austenite grain in the heating process of 300M steel[J].Materials Science & Engineering A,, 2011, 528(15):4967-4972
[4]
Zhang S S, Li M Q, Liu Y G, et al. .The growth behavior of austenite grain in the heating process of 300M steel[J].Materials Science & Engineering A,, 2011, 528(15):4967-4972
[5]
oli? S, Sen?i? B, Leskov?ek V.Influence of heat treatment on mechanical properties of 51CrV4 high strength spring steel[J].International Heat Treatment & Surface Engineering, 2013, 7(2):92-98
[5]
oli? S, Sen?i? B, Leskov?ek V.Influence of heat treatment on mechanical properties of 51CrV4 high strength spring steel[J].International Heat Treatment & Surface Engineering, 2013, 7(2):92-98
Maropoulos S, Karagiannis S, Ridley N.The effect of austenitising temperature on prior austenite grain size in a low-alloy steel[J].Materials Science & Engineering A, 2008, 483(1):735-739
[8]
Maropoulos S, Karagiannis S, Ridley N.The effect of austenitising temperature on prior austenite grain size in a low-alloy steel[J].Materials Science & Engineering A, 2008, 483(1):735-739
Kim H D, Kim I S.Effect of Austenitizing Temperature on Microstructure and Mechanical Properties of 12% Cr Steel[J].Isij International, 1994, 34(2):198-204
[18]
Kim H D, Kim I S.Effect of Austenitizing Temperature on Microstructure and Mechanical Properties of 12% Cr Steel[J].Isij International, 1994, 34(2):198-204