Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel G50

夏志新; 杨卓越; 李保成; 陈嘉砚

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Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel G50

更新时间：2026-01-21

- Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel G50
- Special Steel Vol. 29, Issue 1, Pages: 60-61(2008)
- 作者机构：
  
  1. 中北大学材料科学与工程学院,太原,030051
  2. 中国钢研科技集团公司结构材料研究所,北京,100081
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：31 August 2007，
  
  Online First：16 December 2022，
  
  Published：16 December 2008
- 稿件说明：
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夏志新, 杨卓越, 李保成, et al. Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel G50[J]. Special Steel, 2008, 29(1): 60-61.
DOI：

夏志新, 杨卓越, 李保成, et al. Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel G50[J]. Special Steel, 2008, 29(1): 60-61. DOI：

摘要

研究了真空感应熔炼+真空自耗重熔(VIM-VAR)和电弧炉+真空-氧脱碳+真空自耗重熔(EAF- VOD-VAR)法两种工艺冶炼的超高强度钢G50%:0.28～0.29C、1.88～1.98Si、4.45～4.49Ni、1.04～1.05Cr、0.57～0.61Mo、0.031～0.034Nb)的夹杂物和机械性能。结果表明

EAF-VOD-VAR法冶炼的G50钢夹杂物级别低于VIM-VAR法冶炼的G50钢的夹杂物级别;EAF-VOD-VAR法冶炼的1350钢的韧性(A

KU2

86～88 J

130～132 MPa·m

1/2

)明显高于VIM-VAR法冶炼的G50钢的韧性(A

KU2

70～74 J

112～118 MPa·m

1/2

)。

Abstract

Inclusion and mechanical properties of ultra-high strength steel G50(0.28～0.29C

1.88~1.98Si

4.45 ~4.49Ni

1.04～1.05Gr

0.57～0.61Mo

0.031~0.034Nb)melied by two process VIM-VAR and EAF-VOD-VAR have been studied. Results showed that the inclusion rating units of steel G50 melted by EAF-VOD-VAR process were low- er han that melied by VIM-VAR proccss

and the oughmess of steel G50(A

Ku2

86~88J

130～132 MPa . m

1/2

)was obviously higher than that(A

Ku2

70~74J

112~118 MPa . m

1/2

)of steei G50 melted by VIM-VAR process.

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