| Cr12MoV钢刀具开裂原因分析 |
| |
| 引用本文： | 王宁,丁北斗,崔萌,冯照平.Cr12MoV钢刀具开裂原因分析[J].金属热处理,2020,45(10):246-248. |
| |
| 作者姓名： | 王宁 丁北斗 崔萌 冯照平 |
| |
| 作者单位： | 1.国家网架及钢结构产品质量监督检验中心, 江苏 徐州 221000;2.中国矿业大学 力学与土木工程学院, 江苏 徐州 221000 |
| |
| 基金项目： | 徐州市科技局社会发展项目 |
| |
| 摘 要： | Cr12MoV钢刀具使用过程中发生早期开裂。采用直读光谱仪、光学显微镜、洛氏硬度计、体式显微镜和扫描电镜等方法对Cr12MoV钢刀具的化学成分、显微组织、硬度及断口形貌等进行检验分析。结果表明,材料中存在大量粗大角块状共晶碳化物是导致刀具早期开裂的主要原因。另外,螺孔凹台设计不合理引发应力集中是导致刀具早期开裂的另一个主要原因。
|
| 关 键 词： | Cr12MoV钢 开裂 共晶碳化物 应力集中 |
| 收稿时间： | 2020-03-25 |
Cracking cause analysis of Cr12MoV steel cutting tool |
| |
| Wang Ning,Ding Beidou,Cui Meng,Feng Zhaoping.Cracking cause analysis of Cr12MoV steel cutting tool[J].Heat Treatment of Metals,2020,45(10):246-248. |
| |
| Authors: | Wang Ning Ding Beidou Cui Meng Feng Zhaoping |
| |
| Affiliation: | 1. National Space Frame and Steel Structures Quality Supervision and Inspection Center, Xuzhou Jiangsu 221000, China;2. School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou Jiangsu 221000, China |
| |
| Abstract: | Early cracking of a Cr12MoV steel cutting tool occurred during the period of service. The chemical composition, microstructure, hardness and fracture morphology of the Cr12MoV steel tool were investigated by means of direct reading spectrometer, metallographic microscope, Rockwell hardness tester, stereo microscope and scanning electron microscope (SEM). The results show that the main cause for the early cracking of the tool is the massive eutectic carbides with angled shape existed in the material, and another main cause is the unreasonable design of the screw hole concave platform which causes stress concentration. |
| |
| Keywords: | Cr12MoV steel cracking eutectic carbide stress concentration |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《金属热处理》浏览原始摘要信息 |
|
点击此处可从《金属热处理》下载全文 |
|
