| H13钢压铸模具开裂分析 |
| |
| 引用本文： | 林星豪,陈卫华,吴世勇,吕晨,李浩哲,艾云龙. H13钢压铸模具开裂分析[J]. 失效分析与预防, 2019, 14(4): 265-268. DOI: 10.3969/j.issn.1673-6214.2019.04.010 |
| |
| 作者姓名： | 林星豪 陈卫华 吴世勇 吕晨 李浩哲 艾云龙 |
| |
| 作者单位： | 南昌航空大学材料科学与工程学院,南昌,330063;南昌航空大学材料科学与工程学院,南昌330063;江西洪都航空工业股份有限公司,南昌330024 |
| |
| 摘 要： | H13热作模具在使用过程中发生提前失效，在其工作面发现裂纹。利用金相显微镜(OM)、洛氏硬度计（RHT）、扫描电子显微镜(SEM)与能谱仪(EDS)，分析对比试样的金相组织、基体硬度、微区元素分布情况等。结果表明:H13热作模具钢由于疲劳断裂导致失效，断裂原因为基体组织不均匀、非金属夹杂物与有害杂质元素较多。提高钢的冶金质量、改善热处理工艺、严格控制非金属夹杂物与有害元素含量，可保证模具钢拥有良好的疲劳强度和较长的使用寿命。
|
| 关 键 词： | H13钢 失效 应力集中 非金属夹杂物 有害合金元素 |
| 收稿时间： | 2019-03-28 |
Cracking Analysis of H13 Steel Die Casting Mould |
| |
| LIN Xing-hao,CHEN Wei-hua,WU Shi-yong,LV Chen,LI Hao-zhe,AI Yun-long. Cracking Analysis of H13 Steel Die Casting Mould[J]. Failure Analysis and Prevention, 2019, 14(4): 265-268. DOI: 10.3969/j.issn.1673-6214.2019.04.010 |
| |
| Authors: | LIN Xing-hao CHEN Wei-hua WU Shi-yong LV Chen LI Hao-zhe AI Yun-long |
| |
| Abstract: | Early failure occurred to a H13 hot working mould during service, and a failure crack was found on its working face. Metallographic microscopy (OM), Rockwell hardness testing (RHT), scanning electron microscopy (SEM) and energy disperse spectroscopy (EDS) were used to analyze and compare the microstructure, matrix hardness and microelement distribution of the samples. By analyzing the experimental results, the conclusion can be drawn: the early failure of the H13 mould is fatigue fracture. The fracture was caused by uneven matrix microstructure, non-metallic inclusions and many harmful impurity elements. It is suggested to improve the metallurgical quality of the steel, improve the heat treatment process and strictly control the content of non-metallic inclusions and harmful elements to guarantee the high fatigue strength and long service life of the mould steel. |
| |
| Keywords: | |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《失效分析与预防》浏览原始摘要信息 |
|
点击此处可从《失效分析与预防》下载免费的PDF全文 |
|
