Effect of Aging Temperature on Structure and Properties of 14Co-11Ni- 2Cr-3Mo Secondary Hardening Ultra-high Strength Steel

李阿妮; 王春旭; 刘宪民; 张景海; 王瑞; 李建新

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Effect of Aging Temperature on Structure and Properties of 14Co-11Ni- 2Cr-3Mo Secondary Hardening Ultra-high Strength Steel

更新时间：2026-01-21

- Effect of Aging Temperature on Structure and Properties of 14Co-11Ni- 2Cr-3Mo Secondary Hardening Ultra-high Strength Steel
- Special Steel Vol. 28, Issue 2, Pages: 24-25(2007)
- 作者机构：
  
  1. 钢铁研究总院结构材料研究所,北京,100081
  2. 宝钢特殊钢分公司技术中心,上海,201900
  3. 东北特殊钢集团公司技术中心,抚顺,113001
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：18 September 2006，
  
  Online First：09 March 2023，
  
  Published：09 March 2007
- 稿件说明：
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李阿妮, 王春旭, 刘宪民, et al. Effect of Aging Temperature on Structure and Properties of 14Co-11Ni- 2Cr-3Mo Secondary Hardening Ultra-high Strength Steel[J]. Special Steel, 2007, 28(2): 24-25.
DOI：

李阿妮, 王春旭, 刘宪民, et al. Effect of Aging Temperature on Structure and Properties of 14Co-11Ni- 2Cr-3Mo Secondary Hardening Ultra-high Strength Steel[J]. Special Steel, 2007, 28(2): 24-25. DOI：

摘要

研究了25 kg感应炉熔炼的Co-Ni-Cr-Mo二次硬化超高强度钢(％:0．16C、11．0Ni、2．0Cr、3．0Mo、14．0Co)经460-580℃时效后的组织和力学性能。试验结果表明

该钢经860℃淬火+(-73℃)冷处理+480℃时效后

组织中存在大量弥散分布的针状M(Co

Mo)

C碳化物

钢的屈服强度Rp

0.2

达到最大值1 685 MPa

冲击功A

为20 J;在550℃过时效状态下

板条边界逆转变奥氏体量明显增加

增至32 J

同时Rp

0.2

下降至1 320 MPa。

Abstract

Structure and mechanical properties of Co-Ni-Cr-Mo secondary hardening ultra-high strength steel 0. 16C

11.0Ni

2.0Cr

3.0Mo

14.0Co melted by a 25 kg induction furnace and aged at 460~580 ℃ have been studied. Test results showed that with 860 ℃ quenching + cold treatment at -73 ℃+ aging at 480 ℃

there was large amount dispersed acicular M(Co

Mo)

C precipitates in structure of steel

yield strength Rp

0.2

of steel was up to maximum value 1685 MPa

impact energy A

was 20 J; with overaged condition at 550 ℃

as amount of reverse transformation austenite at lath boundary obviously increased

increased to 32 J and Rp

0.2

decreased to 1320 MPa.

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