Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300

赵磊; 刘宪民; 雍岐龙; 王春旭

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Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300

更新时间：2026-01-21

- Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300
- Special Steel Vol. 28, Issue 2, Pages: 29-30(2007)
- 作者机构：
  
  1. 昆明理工大学材料与冶金学院,昆明,650093
  2. 钢铁研究总院结构材料研究所,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：25 September 2006，
  
  Online First：09 March 2023，
  
  Published：09 March 2007
- 稿件说明：
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赵磊, 刘宪民, 雍岐龙, et al. Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300[J]. Special Steel, 2007, 28(2): 29-30.
DOI：

赵磊, 刘宪民, 雍岐龙, et al. Effect of Heat Treatment on Structure and Properties of Low Alloying Ultra-high Strength Steel DT300[J]. Special Steel, 2007, 28(2): 29-30. DOI：

摘要

试验和分析了840-960℃油淬的DT300钢(％:0．33C、1．78Si、0．76Mn、5．78Ni、1．10Cr、0．65Mo、0．12V)的马氏体转变和ε-碳化物的析出以及淬火温度对300℃回火后钢的机械性能的影响。结果表明

DT300钢经860-920℃1 h油淬+300℃2 h回火可获得较完全的板条马氏体和优良的强韧性(Rm 1 860 MPa

0.2

1 500 MPa

A 12％

ku2

58 J) 。

Abstract

Martensite transformation and s- carbide precipitation in the steel DT300 -0.33C

1.78Si

0.76Mn

5.78Ni

1. 10Cr

0.65Mo

0. 12V oil quenched at 840~960 ℃ and effect of quenching temperature on mechanical properties of 300 ℃ tempered steel have been tested and analyzed. Results showed that complete lath martensite and excellent strength-toughness of steel DT300 were obtained by 860~920 ℃1 h oil cooling + 300 ℃ 2 h tempering. The mechanical properties of heat-treated steel were Rm 1860 MPa

0.2

1500 MPa

A 12% and A

ku2

58 J.

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