• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 1991, Vol. 27 ›› Issue (6): 6-11.

• 论文 • 上一篇    下一篇

铸态含无碳化物贝氏体中锰钢

姜启川;李章;王守实;崔东焕;何镇明   

  1. 吉林工业大学
  • 发布日期:1991-11-01

AS-CAST CARBIDE-FREE BAINITE CONTAINING MEDIUM MANGANESE STEEL

Jiang Qichuan;Li Zhang;Wang Shoshi;Cui Donghuan;He Zhengming   

  1. Jilin University of Technology
  • Published:1991-11-01

摘要： 中锰钢（含1.0%～1.8%C，5.0%～9.0%Mn，0.6%～1.5%Si）在铸态下即可得到无碳化物贝氏体相。在冷却的过程中，当冷却速度大于40℃/min时，室温组织为奥氏体与碳化物；当冷却速度小于20℃/min时，室温组织为无碳化物贝氏体、珠光体、奥氏体与碳化物。无碳化物贝氏体主要是在624～200℃之间形成。在砂型中浇注壁厚大于15mm的铸件时，即可行到大量无碳化物贝氏体，该铸钢具有较佳的硬度，韧度与耐磨性。

关键词: 贝氏体, 锰钢, 铸态组织

Abstract: It has been found that carbide-free bainite exists in an as-cast medium manganese steel (1.0%~1.8%C, 5.0%~9.0%Mn, 0.6%~1.5%Si) structure. The microstructure of the steel at room temperature consists of austenite and carbide when cooling rate I higher than 40℃/min, and of carbide-free bainite, pearlite, austenite and carbide when cooling rate is less than 20℃%/min. Carbide-free bainite mainly formed between 624~200℃ during cooling. A lot of carbide-free bainite is obtained in sand mold castings with sections thicker than 15mm. The hardness, toughness and wear resistance of the carbide-free bainite containing s cast medium manganese steel are very good.

Key words: 贝氏体, 锰钢, 铸态组织

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