INFLUENCE OF PULSED MAGNETIC TREATMENT ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF M42 HIGH SPEED STEEL TOOL
Ma, LP
2015
发表期刊ACTA METALLURGICA SINICA
卷号51期号:3页码:307-314
摘要Magnetic treatment of tools is a novel method to increase tool life in which the tool is magnetized before cutting or the cutting is performed in a magnetic field. The method has many attractive features, such as short treatment time and no pollution. However, this approach has not been widely applied yet, since the mechanism of magnetic treatment of tools is not clear and treatment results are affected by many factors. Therefore, it is important to study the mechanism ofmagnetic treatment of tools. This work aims to study the influence of pulsed magnetic treatment on microstructures and mechanical properties of M42(W2Mo9Cr4VCo8) high speed steel, which is a typical tool material which contains high amounts of cobalt. So it can show a stronger magnetism in the process of pulsed magnetic treatment. Changes of dislocation configuration, carbide distribution and microstructure before and after magnetic treatment were characterized by TEM and laser scanning confocal microscope. Moreover, Rockwell hardness and micro-hardness were measured to quantitatively investigate the influence of magnetic treatment on the mechanical properties. Results showed that after pulsed magnetic treatment the lattice of material was distorted, the carbide was precipitated, and the microstructure and crystalline grain were refined. The changes of microstructure led to changes of mechanical properties,of which the Rockwell hardness and micro-hardness were significantly increased. The maximum increase of Rockwell hardness was 2.9 HRC. Ultimately, the strengthening mechanisms of high speed steel were analyzed based on dislocation theory. It was shown that the subjected force of dislocations due to themagnetic treatment could overcome the centripetal restoring force and the Peierls stress of dislocations. Therefore, dislocations proliferated by the Orowan dislocation strengthening mechanism, and dislocation density increased. The dislocation configuration determined from TEM micrographs was in good agreement with the discussion of dislocation mechanisms.
关键词Pulsed Magnetic Treatment High Speed Steel Microstructure Evolution Dislocation Strengthening
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/15451
专题精密感知与控制研究中心_精密感知与控制
推荐引用方式
GB/T 7714
Ma, LP. INFLUENCE OF PULSED MAGNETIC TREATMENT ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF M42 HIGH SPEED STEEL TOOL[J]. ACTA METALLURGICA SINICA,2015,51(3):307-314.
APA Ma, LP.(2015).INFLUENCE OF PULSED MAGNETIC TREATMENT ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF M42 HIGH SPEED STEEL TOOL.ACTA METALLURGICA SINICA,51(3),307-314.
MLA Ma, LP."INFLUENCE OF PULSED MAGNETIC TREATMENT ON MICROSTRUCTURES AND MECHANICAL PROPERTIES OF M42 HIGH SPEED STEEL TOOL".ACTA METALLURGICA SINICA 51.3(2015):307-314.
条目包含的文件 下载所有文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
网上下载版.pdf(1872KB)期刊论文作者接受稿开放获取CC BY-NC-SA浏览 下载
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ma, LP]的文章
百度学术
百度学术中相似的文章
[Ma, LP]的文章
必应学术
必应学术中相似的文章
[Ma, LP]的文章
相关权益政策
暂无数据
收藏/分享
文件名: 网上下载版.pdf
格式: Adobe PDF
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。