| 摘要: |
| 采用SPS技术进行了异种钢的焊接研究.在不同的SPS工艺参数下实现了45钢/18-8不锈钢的焊接,对焊接接头的显微组织、化学成分、断口特征及显微硬度分布进行了分析,研究了SPS焊接工艺参数对接头组织和性能的影响规律,并提出了SPS焊接的冶金结合机理.结果表明,SPS技术作为一种全新的材料焊接方法,可以在短时、低温、低压下实现异种钢的良好扩散焊接;SPS工艺中温度对焊接接头组织和性能的影响最大,保温时间和加载压力的影响相对较小。 |
| 关键词: 放电等离子 异种钢 焊接 |
| DOI： |
| 分类号: |
| 基金项目:甘肃省有色金属新材料省部共建国家重点实验室开放基金资助项目(SKL05002) |
|
| Research on dissimilar steel welding via spark plasma sintering |
|
ZHANG Guodong, HONG Min, ZHANG Jianqiang, ZHANG Fuju
|
|
Welding Institute, Wuhan University, Wuhan 430072, China
|
| Abstract: |
| The dissimilar steel weldes by spark plasma sintering(SPS)technology was developed in this paper.The welded joints of 45 steel and 18-8 stainless steel were obtained under different SPS parameters, and the microstructure, chemical composition, fractography and micro-hardness of the joints were examined.The influence of SPS parameters on the microstructure and properties of welding joints was studied, and the SPS welding metallurgy mechanism was also discussed.The result indicated that the new SPS technology could make effective welding in short time, low temperature and pressure, and the influence of the temperature is higher than the holding time and the pressure in the SPS procedure. |
| Key words: spark plasma sintering dissimilar metal welding |
