Effect of N Content on Ferrite Phase and Properties of  Maraging Stainless Steel 17-4 PH

史咏鑫; 马胜斌; 才丽娟; 李青; 张欣杰; 冯文静

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Effect of N Content on Ferrite Phase and Properties of Maraging Stainless Steel 17-4 PH

更新时间：2026-01-21

- Effect of N Content on Ferrite Phase and Properties of Maraging Stainless Steel 17-4 PH
- Special Steel Vol. 40, Issue 1, Pages: 68-71(2019)
- 作者机构：
  
  中航上大高温合金材料有限公司,邢台,054000
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 August 2018，
  
  Online First：24 May 2022，
  
  Published：24 May 2019
- 稿件说明：
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史咏鑫, 马胜斌, 才丽娟, et al. Effect of N Content on Ferrite Phase and Properties of Maraging Stainless Steel 17-4 PH[J]. Special Steel, 2019, 40(1): 68-71.
DOI：

史咏鑫, 马胜斌, 才丽娟, et al. Effect of N Content on Ferrite Phase and Properties of Maraging Stainless Steel 17-4 PH[J]. Special Steel, 2019, 40(1): 68-71. DOI：

摘要

试验用17-4PH不锈钢(/%:0.02～0.03C

0.40～0.54Si

0.41～0.60Mn

0.018～0.026P

0.001S

15. 56～15. 75Cr

4. 31～4. 50Ni

3. 21～3.40Cu

0. 20～0. 25Nb

0. 013～0. 067N)采用20 t EAF+LF+VOD+ESR的工艺冶炼

锻造成Φ150 mm棒材。试验结果表明:钢中N含量由0.013%增加至0.067%时

钢中铁素体含量由0.5%增至6%

钢的强度、硬度升高

塑性降低。当N含量控制在0.020%～0.045%

钢中铁素体含量为1%～3%

经1040℃ 1h水冷+480℃ 2 h空冷后

钢的力学性能合格;固溶态钢的HB硬度值≤325

优化了该材料的加工性能。

Abstract

The tested stainless steel 17-4PH (/% : 0.02 ~ 0. 03C

0.40 ~ 0.50Si

0.41 ~0. 60Mn

0.018 ~ 0. 026P

0. 001S

15. 56 ~ 15.75Cr

4. 31 ~ 4. 50Ni

3. 21 ~ 3.40Cu

0. 20 ~ 0.25Nb

0. 013 〜0. 067N) is melted by 20 t EAF + LF + VOD + ESR process and forged to Φ150 mm bar products. Test results show that with increasing N content in steel from 0

013% to 0. 067%

the ferrite content in steel increases from 0. 5% to 6%

the strength and hardness of steel increase and the plasticity of steel decreases. As to control the N content in steel 0. 020% ~0. 045%

the ferrite content in steel is 1% 〜3% and the mechanical properties of steel quenched at 1040 ℃ for 1 h

water cooling + 480 °C for 2 h

air cooling

the mechanical properties of test steel are qualified; and the HB hardness value of so Ed-solution-treated steel is ≤325

so the workability of steel is improved.

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