Transactions of Materials and Heat Treatment

Title：Influence of forging temperature on microstructure and impact property for M2-1.6Si high speed steel in machine tool

Authors： Yang Feng1 Tang Jing1 Zhao Liling2

Unit： 1. College of Mechanical Engineering Henan Polytec hnic Institute 2. School of Materials Science and Engineering Chongqing University

KeyWords： initial forging temperature final forging temperature microstructure impact property M2-1.6Si high speed steel

ClassificationCode：TG132.25

year,vol(issue):pagenumber：2022,47(9):12-17

Abstract：

In order to study the influences of forging temperature on the microstructure and impact property for M2-1.6Si high speed steel, the forging tests were carried out at different forging temperatures, and the microstructure and impact property were tested and analyzed. The results show that when the initial forging temperature increases from 1130 ℃ to 1210 ℃ or the final forging temperature increases from 790 ℃ to 870 ℃, the carbides in the sample are refined first and then coarsened, and the impact properties are improved first and then decreased. Under the condition that the other process parameters remain unchanged, when the initial forging temperature is 1130 ℃, the carbides inside the sample are in the form of coarse “bone-like” shape, while the initial forging temperature is 1170 ℃, the carbides inside the sample are fine particles, and the impact toughness increases by 33.7% compared with that at the initial forging temperature of 1130 ℃. When the other process parameters remain unchanged and the final forging temperature is 790 ℃, the carbides inside the sample present a “bone-like” shape with different sizes, while the final forging temperature is 830 ℃, the carbides inside the sample are fine particles, and the impact toughness increases by 21.7% compared with that at the final forging temperature of 790 ℃.

Funds：

2021年河南省科技攻关计划项目(212102210372)

杨峰（1970-），男，硕士，副教授，高级工程师 E-mail：yf5143@163.com

Reference：

[1]顾绳初, 朱丽慧,段元满,等. M2高速钢的高温摩擦磨损行为[J]. 上海金属,2020,42(4):50-55.

Gu S C, Zhu L H, Duan Y M, et al. Friction and wear behavior of M2 high speed steel at elevated temperature[J]. Shanghai Metals,2020,42(4):50-55.

[2]齐文涛, 夏智斌,李强,等. 磁场下回火热处理对M2高速钢显微组织及硬度的影响[J]. 模具工业,2020,46(1):7-10,17.

Qi W T, Xia Z B, Li Q, et al. Effect of magnetic field on microstructure and hardness during tempering of M2 high speed steel[J]. Die & Mould Industry,2020,46(1):7-10,17.

[3]谢志彬, 邵青立,张国平,等. 快速抽锭电渣重熔M2高速钢160 mm×160 mm铸坯工艺及质量[J]. 特殊钢,2019,40(1):47-51.

Xie Z B, Shao Q L, Zhang G P, et al. Process and quality of M2 HSS 160 mm×160 mm casting billet by ESR fast withdrawing process[J]. Special Steel,2019,40(1):47-51.

[4]杨一俏, 赵骧. 扫描速率对激光直接金属沉积M2高速钢微观组织和硬度的影响[J]. 热加工工艺,2019,48(20):73-76.

Yang Y Q, Zhao X. Effect of scaning speed on microstructure and hardness of M2 high speed steel by direct laser metal deposition[J]. Hot Working Technology,2019,48(20):73-76.

[5]刘瑞卿, 何浩,娄嘉,等. 真空度及碳含量对M2高速钢组织和拉伸性能的影响[J]. 粉末冶金材料科学与工程,2019,24(6):508-514.

Liu R Q, He H, Lou J, et al. Effects of vacuum degree and carbon content on microstructure and tensile properties of M2 high speed steel[J]. Materials Science and Engineering of Powder Metallurgy,2019,24(6):508-514.

[6]刘成宇. 半固态变形对M2高速钢组织中碳化物的影响[J]. 东北大学学报:自然科学版,2019,40(2):192-196,223.

Liu C Y. Effect of semi-solid deformation on carbides in M2 high-speed steel[J]. Journal of Northeastern University: Natural Science,2019,40(2):192-196,223.

[7]徐皓, 刘江. 长城2020转向节锻模设计及其锻造工艺生产验证[J]. 锻压技术,2021,46(1):24-28.

Xu H, Liu J. Forging die design of Great Wall 2020 steering knuckle and production verification of its forging process[J]. Forging & Stamping Technology,2021,46(1):24-28.

[8]周渝庆, 张祥. 机械紧固件用新型钛合金的锻造温度优化[J]. 锻压技术,2020,45(1):35-40.

Zhou Y Q, Zhang X. Optimization on forging temperature of new titanium alloy for mechanical fasteners [J]. Forging & Stamping Technology,2020,45(1):35-40.

[9]王维青, 潘复生,汤爱涛,等. Si影响M2高速钢中共晶碳化物的精细研究[J]. 材料导报,2011,25(2):89-91,103.

Wang W Q, Pan F S, Tang A T, et al. Investigation on effect of Si addition on the eutectic carbides of the as-cast M2 high speed steel[J]. Materials Review,2011,25(2):89-91,103.

[10]王英虎. 锻造工艺对易切削钢中硫化锰及力学性能的影响[J]. 锻压技术,2021,46(5):12-18.

Wang Y H. Influence of forging process on manganese sulfide and mechanical properties for free cutting steel[J]. Forging & Stamping Technology,2021,46(5):12-18.

[11]方秀荣, 邵艳茹,陆佳,等. 锻造工艺参数对TC4钛合金锻件残余应力的影响[J]. 锻压技术,2021,46(3):1-8.

Fang X R, Shao Y R, Lu J, et al.Influence of forging process parameters on residual stress of TC4 titanium alloy forgings[J]. Forging & Stamping Technology,2021,46(3):1-8.

[12]GB/T 229—2020, 金属材料夏比摆锺冲击试验方法[S].

GB/T 229—2020, Metallic materials—Charpy pendulum impact test method[S].

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