Q & P(淬火和分配)工艺对25Si2Ni3钢组织和力学性能的影响

特殊钢 ›› 2008, Vol. 29 ›› Issue (5): 56-58.

Q & P(淬火和分配)工艺对25Si2Ni3钢组织和力学性能的影响

解西强^1,2，高文涛³，时捷² ，王存宇²，张方¹

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;

收稿日期:2008-03-10 出版日期:2008-10-01 发布日期:2023-01-09
作者简介:解西强(1983-),男，硕士研究生，2008年昆明理工大学毕业，从事马氏体钢组织性能的研究.

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

Xie Xiqiang^1,2 , Gao Wentao³ , ShiJie² , Wang Cunyu² , Zhang Fang¹

1. Mechano-Electronic School,Kunming University of Science and Technology,Kunming 650093;
2. Institute for Structural Materials,Central Iron and Steel Research Institute,Beijing 100081;
3. Anshan Iron and Steel Group Co,Anshan 114021;

Received:2008-03-10 Published:2008-10-01 Online:2023-01-09

摘要/Abstract

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。

关键词: Q &, P工艺, 力学性能, 组织

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.

Key words: Quenching and Partitioning Process, Mechanical Properties , Structure

解西强, 高文涛, 时捷, 王存宇, 张方. Q & P(淬火和分配)工艺对25Si2Ni3钢组织和力学性能的影响[J]. 特殊钢, 2008, 29(5): 56-58.

Xie Xiqiang , Gao Wentao , ShiJie , Wang Cunyu , Zhang Fang. Effect of Quenching and Partitioning(Q & P)Process on Structure and Mechanical Properties of Steel 25Si2Ni3[J]. Special Steel, 2008, 29(5): 56-58.

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