Effect of Tempering on Structure and Mechanical Properties of Steel 20SiMn3NiA

赵艳君; 孟庆雪; 包卫平; 任学平

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Effect of Tempering on Structure and Mechanical Properties of Steel 20SiMn3NiA

更新时间：2026-01-21

- Effect of Tempering on Structure and Mechanical Properties of Steel 20SiMn3NiA
- Special Steel Vol. 31, Issue 4, Pages: 53-55(2010)
- 作者机构：
  
  1. 北京科技大学材料科学与工程学院,北京,100083
  2. 广西大学材料科学与工程学院,南宁,530004
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：21 January 2010，
  
  Online First：20 November 2022，
  
  Published：20 November 2010
- 稿件说明：
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赵艳君, 孟庆雪, 包卫平, et al. Effect of Tempering on Structure and Mechanical Properties of Steel 20SiMn3NiA[J]. Special Steel, 2010, 31(4): 53-55.
DOI：

赵艳君, 孟庆雪, 包卫平, et al. Effect of Tempering on Structure and Mechanical Properties of Steel 20SiMn3NiA[J]. Special Steel, 2010, 31(4): 53-55. DOI：

摘要

研究了20SiMn3NiA钢860℃正火

900℃40 min油淬

180～650℃90～150 min回火的组织和力学性能。结果表明

该钢较佳的回火温度为200～250℃

230℃回火后得到板条马氏体、细棒状碳化物析出相和残余奥氏体

在250℃回火时该钢的抗拉强度(Rm)超过1 500 MPa

冲击韧性(AKY)超过80 J

有较好的强韧性匹配。20SiMn3NiA钢在320℃中温回火时

碳化物析出相呈连续的片状分布

使得该钢的冲击韧性值很低

当在320～600℃区间回火时

20SiMn3NiA钢具有明显的回火脆性。

Abstract

Structure and mechanical properties of steel 20SiMn3NiA normalized at 860 ℃

oil quenched at 900 ℃ for 40 min and tempered at 180~650℃ for 90~150 min have been studied. Results show that the better tempering temperature of steel is 200~250℃

the lath martensite

fine slim rod precipitated carbide and residual austenite are obtained in the steel tempered at 230 ℃ and with steel tempered at 250 ℃ the tensile strength(Rm)is more than 1500 MPa and the impact energy(Axv)is higher than 80J with excellent combination of strength and toughness as the steel 20SiMn3NiA is tempered at 320 ℃

the precipitated carbide is continuous lamellar distribution in steel led to lower impact energy of steel and thMeastea0Iie3NiSeelm2p0et3～

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