Hardenability of D406A steel after vacuum high-pressure gas quenching

doi:10.13251/j.issn.0254-6051.2020.02.036

Abstract

Abstract:

Effects of different gas pressure on mechanical properties, hardenability and microstructure of D406A steel were studied. The results show that the hardened depth of D406A steel increases with the increase of gas quenching pressure, the ø20 mm round D406A steel can be hardened fully when gas quenched under 5 bar pressure, and the ø10 mm round D406A steel can be hardened fully when gas quenched under 1.5 bar pressure. Mechanical properties of specimens quenched by gas can meet the standard requirements, and the microstructure is composed of uniform lath martensite.

Key words: D406A steel, vacuum high-pressure gas quenching, mechanical properties, hardenability, microstructure

CLC Number:

TG16.95

Lü Chaojun, Tang Lina, Ren Wei, Wang Jianbo, Zhang Tiande. Hardenability of D406A steel after vacuum high-pressure gas quenching[J]. HTM, 2020, 45(2): 189-192.

References

[1]陈天运, 刘天琪, 孙枫. 真空高压气淬300M钢的显微组织与力学性能[J]. 金属热处理, 2014, 39(5): 122-124.
Chen Tianyun, Liu Tianqi, Sun Feng. Microstructure and mechanical properties of 300M steel after vacuum high pressure gas quenching[J]. Heat Treatment of Metals, 2014, 39(5): 122-124.
[2]宋毅飞, 于新年, 王克喜. 高压真空气淬工艺在30CrMnSiNi2A上的应用研究[J]. 航天制造技术, 2006, 6(3): 53-55.
Song Yifei, Yu Xinnian, Wang Kexi. The study of 30CrMnSiNi2A on the high pressure vacuum gas quench[J]. Aerospace Manufacturing Technology, 2006, 6(3): 53-55.
[3]程志永, 孙枫, 佟小军, 等. 27SiMnMoV钢针阀体的高压气淬工艺[J]. 金属热处理, 2015, 40(5): 113-117.
Cheng Zhiyong, Sun Feng, Tong Xiaojun, et al. High pressure gas quenching for 27SiMnMoV steel injector valve[J]. Heat Treatment of Metals, 2015, 40(5): 113-117.
[4]王志坚, 尚晓峰. 真空高压气淬炉中淬火气体压力、流速和类型对工件冷却性能影响的数值模拟[J]. 真空, 2011, 48(6): 76-80.
Wang Zhijian, Shang Xiaofeng. Numerical simulation of the effects of pressure, speed and type of quenching gas on the workpiece cooling performance in vacuum high-pressure gas quenching furnace[J]. Vaccum, 2011, 48(6): 76-80.
[5]Lübben T, Hoffman F, Mayr P, et al. The uniformity of cooling in high-pressure gas quenching[J]. Heat Treatment of Metals, 2000, 27(3): 57-61.
[6]孙强, 周重光, 袁书强, 等. 超高强度钢研究进展及其在军事上的应用[J]. 材料导报, 2006(3): 14-16.
Sun Qiang, Zhou Chongguang, Yuan Shuqiang, et al. Research progress in ultrahigh-strength steel and its application in military affairs[J]. Materials Review, 2006(3): 14-16.
[7]高文栋. 钢真空油淬和高压气淬的变形控制[J]. 热处理技术与装备, 2008, 29(4): 37-38.
Gao Wendong. Distortion control of steels during vacuun oi1 quench and high pressure gas quench[J]. Heat Treatment Technology and Equipment, 2008, 29(4): 37-38.

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