学术
EAF-VOD-VAR和VIM-VAR冶炼工艺对G50超高强度钢韧性的影响
夏志新[1,2] 杨卓越[2] 李保成[1] 陈嘉砚[2]
[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
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G50钢的韧性（AKU286～88J，墨c130～132MPa·in^1/2）明显高于VIM．VAR法冶炼的G50钢的韧性（AKU270～74J，KIc112～118MPa·m^1/2）。[著者文摘]
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文章出处:
《特殊钢》-2008年1期 -60-61页
栏目信息:
分 类 号:
Effect of EAF-VOD-VAR and VIM-VAR Metallurgical Process on Toughness of Ultra-high Strength Steel （;50
Xia Zhixin, Yang Zhuoyue, Li Baocheng and Chen Jiayan （1 College of Materials Science and Engineering, Zhongbei University, Taiyuan 030051; 2 Institute for Science Materials, China Iron ＆ Steel Research Institute Group, Beijing 100081 ）
Abstract:
Inclusion and mechanical properties of ultra-high strength steel GS0 （0.28 - 0.29C, 1.88 - 1.98Si, 4.45 - 4. 49Ni, 1.04 - 1.05Cr, 0.57 - 0. 61Mo, 0. 031- 0. 034Nb） melted by two process VIM-VAR and EAF-VOD-VAR have been studied. Results showed that the inclusion rating units of steel GS0 melted by EAF-VOD-VAR process were low- er than that melted by VIM-VAR process, and the toughness of steel GS0 （AK1/2 86 - 88 J, Kic 130-132 MPa· m^1/2 ） was obviously higher than that （AKtr2 70 - 74 J, KIC 112 - 118 MPa · m^1/2） of steel G50 melted by VIM-VAR process.[著者文摘]
Key words:
Ultra-high Strength Steel GS0, VIM-VAR, EAF-VOD-VAR, Inclusion, Toughness
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