Aiming at the problem of excessive 糖心产精国品免费入口*完整版 of 42CrMo alloy steel bar after rolling, the 糖心产精国品免费入口*完整版 transformation of 42CrMo alloy steel during cooling was studied by Gleeble 糖心产精国品免费入口*完整版 machine, and the 糖心产精国品免费入口*完整版 and 糖心产精国品免费入口*完整版 of 42CrMo alloy steel after conventional rolling and 糖心产精国品免费入口*完整版were compared. The results show that bainite transformation begin to appear in 42CrMo alloy steel when the cooling rate was above 0.3 ℃·s-1. When the cooling rate was 1.0~10.0 ℃·s-1, only bainite and martensite transformation occurred. By conventional rolling process, the 糖心产精国品免费入口*完整版 of the 42CrMo alloy steel was between 300~320 HBW, and the 糖心产精国品免费入口*完整版 was mainly ferrite+pearlite+bainite. By 糖心产精国品免费入口*完整版process, the 糖心产精国品免费入口*完整版 of the 42CrMo alloy steel can be reduced to 240 HBW and the 糖心产精国品免费入口*完整版 was mainly ferrite + pearlite when the finishing rolling temperature was controlled at 800 ℃.
引用该论文:ZHOU Guangli,ZHANG Xiaokang,DING Jing,XU Wenxi,WANG Fuli. Control of Hardness and Microstructure of 42CrMo Alloy Steel Bar[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2021, 57(8): 15~20 糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版,糖心产精国品免费入口*完整版. 糖心产精国品免费入口*完整版棒材糖心产精国品免费入口*完整版及糖心产精国品免费入口*完整版控制[J]. 理化检验-物理分册, 2021, 57(8): 15~20
【9】GUO Z Q, GUI S L, TAO C, et al. Dynamic recrystallization kinetics of 42CrMo steel during compression at different temperatures and strain rates[J]. Materials Science and Engineering:A, 2011, 528(13):4643-4651.