摘要
采用扫描电镜(SEM)、洛氏硬度计和万能试验机研究了双金属带锯条的背材用钢30Cr4MoNiV经1150~1190℃淬火和520~640℃回火后的微观组织和力学性能,并通过弯曲疲劳试验和锯切试验来检测30Cr4MoNiV钢的疲劳性能。结果表明:30Cr4MoNiV钢合适的淬火温度为1190℃,此时合金元素固溶充分且马氏体组织均匀细小;最佳回火温度为600℃,得到回火索氏体组织。经1190℃淬火+600℃回火3次后,30Cr4MoNiV钢的强塑积为15.64 GPa·%,弯曲疲劳性能由3745次提高到5270次,且锯切疲劳性能比进口CDW钢高25.6%。
Microstructure and mechanical properties of 30 Cr4 MoNiV steel used for bi-metal band saw blade after quenching at 1150-1190 ℃ and tempering at 520-640 ℃ were investigated by means of scanning electron microscope(SEM), Rockwell hardness tester and universal testing machine, and the fatigue properties of the 30 Cr4 MoNiV steel were tested by bending fatigue test and cutting test. The results show that the suitable quenching temperature of the 30 Cr4 MoNiV steel is 1190 ℃, at which the alloying elements are fully dissolved and the resulted martensite structure is uniform and fine;the optimal tempering temperature is 600 ℃, at which the microstructure is tempering sorbite. After quenching at 1190 ℃ and tempering at 600 ℃ for three times, the product of strength and elongation of the 30 Cr4 MonIV steel is 15.64 GPa·%, the bending fatigue performance increases from 3745 to 5270 times, and the sawing fatigue performance is 25.6% higher than that of imported CDW steel.
作者
陈刚
姚远超
贾寓真
苏斌
刘国跃
曾斌
Chen Gang;Yao Yuanchao;Jia Yuzhen;Su Bin;Liu Guoyue;Zeng Bin(College of Materials Science and Engineering,Hunan University,Changsha Hunan 410082,China;Sawing Engineering Research Center of Hunan Province,Changsha Hunan 410200,China;Bichamp Cutting Technology(Hunan)Co.,Ltd.,Changsha Hunan 410200,China;Hunan Valin Lianyuan Iron and Steel Co.,Ltd.,Loudi Hunan 417000,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2022年第1期266-271,共6页
Heat Treatment of Metals
基金
双金属带锯条背材X32/D6A钢的合金成分优化及应用研究(618306kj0023)。
