Vacuum heat treatment of 0Cr17Ni4Cu4Nb stainless steel base

doi:10.13251/j.issn.0254-6051.2021.08.035

Abstract

Abstract: In order to meet the requirements of mechanical properties and control distortion during quenching, a vacuum solid solution and aging process of 0Cr17Ni4Cu4Nb stainless steel base was determined via a series of experiments. The results show that after solution treatment at 1060 ℃ for 1.5 h, oil cooling and aging at 460 ℃ for 4 h, and then air cooling, the tensile strength of the workpiece is ≥1420 MPa, hardness is ≥42.5 HRC, and flatness of mounting surface is ≤0.5 mm. In addition, the dimension control can be realized by adjusting the quenching oil temperature and prolonging the charging precooling time in the vacuum quenching furnace.

Key words: precipitation hardening martensitic stainless steel, solid solution and aging, distortion control

CLC Number:

TG156.3

He Li. Vacuum heat treatment of 0Cr17Ni4Cu4Nb stainless steel base[J]. Heat Treatment of Metals, 2021, 46(8): 189-191.

References

[1]陈炜, 梁盈. 时效工艺对17-4PH沉淀硬化不锈钢奥氏体的影响[J]. 热处理, 2018, 33(5): 52-54.
Chen Wei, Liang Ying. Effect of aging process on austenite amount of 17-4PH precipitation hardening stainless steel[J]. Heat Treatment, 2018, 33(5): 52-54.
[2]李颇, 郭李波, 王小奎. 沉淀硬化型不锈钢0Cr17Ni4Cu4Nb试验研究[J]. 黑龙江冶金, 2006(3): 7-9.
Li Po, Guo Libo, Wang Xiaokui. Experimental study on precipitation hardening stainless steel 0Cr17Ni4Cu4Nb[J]. Heilongjiang Metallurgy, 2006(3): 7-9.
[3]邓德伟, 陈蕊, 田鑫, 等. 热处理对17-4PH马氏体不锈钢显微组织及性能的影响[J]. 金属热处理, 2013, 38(4): 32-36.
Deng Dewei, Chen Rui, Tian Xin, et al. Influence of heat treatment on microstructure and properties of 17-4PH martensitic stainless steel[J]. Heat Treatment of Metals, 2013, 38(4): 32-36.
[4]侯凯, 杨鑫鑫, 赵立, 等. 热处理工艺对17-4PH不锈钢冲击韧度的影响[J]. 金属加工(热加工), 2012(7): 47-49.
Hou Kai, Yang Xinxin, Zhao Li, et al. Effect of heat treatment process on impact toughness of 17-4PH stainless steel[J]. MW Metal Forming, 2012(7): 47-49.
[5]刘春燕, 李敬民. 17-4PH沉淀硬化不锈钢力学性能稳定性研究[J]. 热加工工艺, 2018, 47(20): 178-181, 185.
Liu Chunyan, Li Jingmin. Research on mechanical properties stability of 17-4PH precipitated hardened stainless steel[J]. Hot Working Technology, 2018, 47(20): 178-181, 185.
[6]叶丽梅. 分析热处理工艺对17-4PH不锈钢强度和组织的影响[J]. 世界有色金属, 2017(5): 10-11.
Ye Limei. Effect of heat treatment process on strength and microstructure of 17-4PH stainless steel[J]. World Nonferrous Metals, 2017(5): 10-11.
[7]赵义, 王福. 热处理工艺对17-4PH钢低温冲击性能的影响[J]. 金属热处理, 2011, 36(4): 21-26.
Zhao Yi, Wang Fu. Effect of heat treatment process on low temperature impact properties of 17-4PH steel[J]. Heat Treatment of Metals, 2011, 36(4): 21-26.
[8]王剑星, 杨钢, 张忠模, 等. 热处理工艺对0Cr17Ni4Cu4Nb不锈钢组织和力学性能的影响[J]. 金属热处理, 2012, 37(11): 90-94.
Wang Jianxing, Yang Gang, Zhang Zhongmo, et al. Effect of heat treatment process on microstructure and mechanical properties of 0Cr17Ni4Cu4Nb stainless steel[J]. Heat Treatment of Metals, 2012, 37(11): 90-94.
[9]郭亚欢. 0Cr17Ni4Cu4Nb不锈钢热处理工艺及性能研究[D]. 哈尔滨: 哈尔滨工程大学, 2011.
[10]解文飞. 马氏体沉淀硬化不锈钢强化机理研究[D]. 上海: 上海工程技术大学, 2020.