| 热处理工艺对高压气瓶用34CrMo4钢屈强比的影响 |
| |
| 引用本文： | 张雨源,杨刚,范俊明,范国金.热处理工艺对高压气瓶用34CrMo4钢屈强比的影响[J].金属热处理,2020,45(2):125-128. |
| |
| 作者姓名： | 张雨源 杨刚 范俊明 范国金 |
| |
| 作者单位： | 1. 四川大学 机械工程学院, 四川 成都 610065;
2. 成都格瑞特高压容器有限责任公司, 四川 成都 610400 |
| |
| 摘 要： | 为了改善高压气瓶用34CrMo4钢屈强比较高的问题,分别研究了调质处理(QT)、在浓度为7.5%PAG水溶性淬火剂中的淬火+回火(Q1T)、亚温淬火+回火(IT)和淬火+亚温淬火+回火(QIT)4种不同热处理工艺对34CrMo4钢屈强比的影响,以及屈强比与微观组织之间的关系。结果表明:采用QT工艺得到回火索氏体组织,屈强比最高;采用Q1T工艺得到较粗的回火索氏体组织,屈强比较高;采用IT工艺得到回火索氏体+块状及板条状铁素体两相组织,屈强比较低;采用QIT工艺得到回火索氏体+均匀分布的板条铁素体两相组织,屈强比最低。试样的组织为硬相回火索氏体上分布着软相铁素体时,有较低的屈强比。
|
| 关 键 词： | 34CrMo4钢 屈强比 热处理 显微组织 亚温淬火 |
| 收稿时间： | 2019-09-13 |
Effect of heat treatment process on yield ratio of 34CrMo4 steel for high pressure gas cylinders |
| |
| Zhang Yuyuan,Yang Gang,Fan Junming,Fan Guojin.Effect of heat treatment process on yield ratio of 34CrMo4 steel for high pressure gas cylinders[J].Heat Treatment of Metals,2020,45(2):125-128. |
| |
| Authors: | Zhang Yuyuan Yang Gang Fan Junming Fan Guojin |
| |
| Affiliation: | 1. School of Mechanical Engineering, Sichuan University, Chengdu Sichuan 610065, China;
2. Chengdu Great High Pressure Vessel Co., Ltd., Chengdu Sichuan 610400, China |
| |
| Abstract: | In order to adress the higher yield ratio issue of 34CrMo4 steel for high pressure gas cylinders,effect of different heat treating processes including quenching and tempering( QT),quenching in 7. 5% PAG aqueous quenchant and tempering( Q1 T),intercritical quenching and tempering( IT) and quenching plus intercritical quenching and tempering( QIT) on yield ratio of the 34 CrMo4 steel were investigated,and the relationship between yield ratio and microstructure was also studied. The results show that after QT process,the microstructure of the tested steel consists of sorbite,and the yield ratio is highest. After Q1T process,the microstructure of the tested steel consists of coarse sorbite,and the yield ratio is higher. After IT process,sorbite with polygonal and lath ferrite as second phase is obtained,and the yield ratio is lower. After QIT process,the microstructure consists of sorbite with even distributed lath ferrite as second phase,and the yield ratio is lowest. Based on the results,the specimen has lower yield ratio when there is a soft phase ferrite distributed on tempered sorbite. |
| |
| Keywords: | 34CrMo4 steel yield ratio heat treatment microstructure intercritical quenching |
| 本文献已被 CNKI 维普 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 |
|
