Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3

解西强; 高文涛; 时捷; 王存宇; 张方

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Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3

更新时间：2026-01-21

- Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3
- Special Steel Vol. 29, Issue 5, Pages: 56-58(2008)
- 作者机构：
  
  1. 昆明理工大学机电学院,昆明,650093
  2. 钢铁研究总院结构材料研究所.,北京,100081
  3. 鞍山钢铁集团公司,鞍山,114021
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：10 March 2008，
  
  Online First：09 January 2023，
  
  Published：09 January 2008
- 稿件说明：
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解西强, 高文涛, 时捷, et al. Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3[J]. Special Steel, 2008, 29(5): 56-58.
DOI：

解西强, 高文涛, 时捷, et al. Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3[J]. Special Steel, 2008, 29(5): 56-58. DOI：

摘要

对0.24C-1.72Si-2.96Ni钢进行Q&P处理:880℃15min-淬火至150～260℃(QT)5 min-300℃10 min油淬。结果表明

Q&P处理的钢为板条马氏体、残余奥氏体、孪晶马氏体和ε碳化物的复合组织;QT影响钢中马氏体量

随QT由150℃升高至260℃

钢的抗拉强度由1 580 MPa降至1 505 MPa

冲击功由45 J升至50 J。与传统淬-回火工艺相比

Q&P处理钢的抗拉强度降低25～100 MPa

冲击功提高5～8 J

伸长率没有明显变化。

Abstract

The Q&P process: heating at 880 ℃ for 15 min-quenching to 150~260 ℃(QT) for 5 min -heating to 300℃ for 10 min and oil cooling of steel 0.24C-1.72Si-2.96Ni has been carried out.Results showed that the Q&P treated steel had complicated structure consisting of lath martensite

retained austenite

twinned martensite and ε-carbides; the QT had influence on amount of martensite in steel

with increasing QT from 150℃ to 260℃

the tensile strength of steel decreased from 1580 MPa to l505 MPa

the impact energy of steel increased from 45 J to 50 J.As compared with traditional quenching-tempering process

the tensile strength of Q&P treated steel decreased by 25～100 MPa

the impact energy of Q & P treated steel increased by 5~8J

of which the elongation of steel hadn't obvious change.

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