Effect of Heat Treatment on Mechanical Properties of High Strength Free-Cutting Precipitation Hardening Stainless Steel 2Cr16Ni3Mo2CuN

李志; 高谦; 高登攀; 江志华; 姜洪胜; 许广鹏

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Effect of Heat Treatment on Mechanical Properties of High Strength Free-Cutting Precipitation Hardening Stainless Steel 2Cr16Ni3Mo2CuN

更新时间：2026-01-21

- Effect of Heat Treatment on Mechanical Properties of High Strength Free-Cutting Precipitation Hardening Stainless Steel 2Cr16Ni3Mo2CuN
- Special Steel Vol. 26, Issue 6, Pages: 23-25(2005)
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- Received：20 June 2005，
  
  Online First：11 April 2023，
  
  Published：11 April 2005
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李志, 高谦, 高登攀, et al. Effect of Heat Treatment on Mechanical Properties of High Strength Free-Cutting Precipitation Hardening Stainless Steel 2Cr16Ni3Mo2CuN[J]. Special Steel, 2005, 26(6): 23-25.
DOI：

李志, 高谦, 高登攀, et al. Effect of Heat Treatment on Mechanical Properties of High Strength Free-Cutting Precipitation Hardening Stainless Steel 2Cr16Ni3Mo2CuN[J]. Special Steel, 2005, 26(6): 23-25. DOI：

摘要

高强度易切削沉淀硬化不锈钢2Cr16Ni3Mo2CuN在退火状态下有优良的切削性能。研究了经过一级退火温度710~800℃和二级退火温度570~620℃处理后2Cr16Ni3Mo2CuN钢的布氏硬度(HB)值

以及1 050~1 085℃45 min油冷

-70℃2 h

150

170℃回火后的力学性能。试验结果表明

710~740℃5 h空冷+620℃5 h空冷处理后

2Cr16Ni3Mo2CuN钢HB值在321以下;1 050~1 085℃淬火

150~200℃回火处理后

该钢强度极限σ

≥1 520 MPa

≥12%

冲击功A

≥40 J。2Cr16Ni3Mo2CuN钢具有明显的二次硬化特征

二次硬化峰温度范围为480~520℃。

Abstract

The high strength free-cutting precipitation hardening stainless steel 2Cr16Ni3Mo2CuN has excellent cutting property in annealing conditions. The Brinell hardness(HB)number of steel 2Cr16N3Mo2CuN treated by first annealing at temperature between 710 ℃ and 800 ℃ and second annealing at temperature between 570 ℃ and 620 ℃ and the mechanical properties of steel treated with 1050~1085 ℃ for 45 min oil cooling

-70 ℃ for 2 h and 150 ℃ or 170 ℃ tempering have been studied. The test results showed that HB number of steel 2Cr16Ni3Mo2CuN treated with 710~740 ℃ for 5 h + 620 ℃5 h was less than 321 and tensile strength σ

of steel was ≥1520 MPa

≥12% and impact energy A

≥40 J. The steel 2Cr16Ni3Mo2CuN showed obvious secondary harde

ring effect and the peak temperature range of this effect was between 480 ℃ and 520℃.

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