[1]刘正义,林鼎文.再论55SiMnMo钢贝氏体形态[J].华侨大学学报(自然科学版),2014,35(6):616-619.[doi:10.11830/ISSN.1000-5013.2014.06.0616]
 LIU Zheng-yi,LIN Ding-wen.Further Discussion on the Bainite Morphology of 55SiMnMo Steel[J].Journal of Huaqiao University(Natural Science),2014,35(6):616-619.[doi:10.11830/ISSN.1000-5013.2014.06.0616]
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再论55SiMnMo钢贝氏体形态()
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《华侨大学学报(自然科学版)》[ISSN:1000-5013/CN:35-1079/N]

卷:
第35卷
期数:
2014年第6期
页码:
616-619
栏目:
出版日期:
2014-11-20

文章信息/Info

Title:
Further Discussion on the Bainite Morphology of 55SiMnMo Steel
文章编号:
1000-5013(2014)06-0616-04
作者:
刘正义1 林鼎文2
1.华南理工大学 机械与汽车工程学院, 广东 广州 510640;2.华侨大学 机电及自动化学院, 福建 厦门 361021
Author(s):
LIU Zheng-yi1 LIN Ding-wen2
1.College of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, China; 2.College of Mechanical Engineering and Automation, Huaqiao University, Xiamen 361021, China
关键词:
55SiMnMo钢 贝氏体 正火 等温
Keywords:
55SiMnMo steel Bainite normalization isothermy
分类号:
TG151.1
DOI:
10.11830/ISSN.1000-5013.2014.06.0616
文献标志码:
A
摘要:
讨论55SiMnMo钎钢在正火(连续空冷)和等温条件下所转变的贝氏体,分析这两种贝氏体的形貌和形态差异.研究结果表明:55SiMnMo钢加热(超过AC3点)奥氏体化后,正火(连续空冷)获得的金相组织是B4型无碳化物上贝氏体(铁素体+富碳奥氏体);在等温条件下:等温的温度达到或超过400 ℃,长时间等温的金相组织是B2型,B4型混合贝氏体,B2型的比例多过B4型(以B2型为主),短时间的等温则是以B4型为主;等温的温度低过400 ℃,即使长时间等温,其金相组织仍是B4型贝氏体.
Abstract:
This paper discusses bainite of 55SiMnMo rock-drill steel, transformed under normalization(continuous cooling)and isothermal condition by analyzing the topography and morphology disparity of the two types of bainite. The research results demonstrate that the metallographic structure, gotten by normalization(continuous cooling), is B4 type no-carbide-bainite(ferrite and carbon-rich austenite)after heating(over AC3 point)and austenitizing 55SiMnMo steel. Under isothermy condition, the metallographic structure, gotten by long-time isothermy, is B2 type and B4 type mixed bainite with the temperature of or over 400 ℃.The proportion of B2 type is higher than B4 type(mainly B2 type). And B4 type is mainly gotten with the short isothermy time. While the isothermy is below 400 ℃, the metallographic structure is still B2 type bainite even though the isothermal time is long.

参考文献/References:

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 Dai Qiulian.Morphology of Bainites in Austempered Ductile Iron[J].Journal of Huaqiao University(Natural Science),1999,20(6):178.[doi:10.11830/ISSN.1000-5013.1999.02.0178]

备注/Memo

备注/Memo:
收稿日期: 2014-07-13
通信作者: 刘正义(1935-),男,教授,主要从事金属及合金显微组织和力学性能的研究.E-mail:zyliu@scut.edu.cn.
更新日期/Last Update: 2014-11-20