| Mo元素对NiCrBSi合金激光熔覆层开裂敏感性的影响 |
| |
| 引用本文： | 张平,原津萍,孙磊,赵军军.Mo元素对NiCrBSi合金激光熔覆层开裂敏感性的影响[J].焊接学报,2009,30(2):68-70. |
| |
| 作者姓名： | 张平 原津萍 孙磊 赵军军 |
| |
| 作者单位： | 装甲兵工程学院,装备再制造技术国防科技重点实验室,北京,100072 |
| |
| 摘 要： | 采用CO2固体激光器,在45CrNi钢表面制备了添加成分(质量分数,%)为0,2.5,5.0,7.5,10.0 Mo的NiCrBSi合金熔覆层,研究了Mo元素对熔覆层开裂敏感性的影响,并从线膨胀系数和熔覆层凝固组织特性两方面对其影响进行了分析.结果表明,NiCrBSi合金对裂纹很敏感,熔覆层表面出现大量横向宏观裂纹,NiCrBSi合金中添加质量分数5.0% Mo,可改善凝固组织中硬质相的成分和形态,降低熔覆层的线膨胀系数,二者综合作用,降低了熔覆层的开裂敏感性.
|
| 关 键 词： | 激光熔覆 开裂敏感性 线膨胀系数 镍基自熔性合金 |
| 收稿时间： | 2008/10/29 0:00:00 |
Effect of molybdenum on crack sensibilities of laser cladded NiCrBSi alloy coatings |
| |
| ZHANG Ping,YUAN Jinping,SUN Lei and ZHAO Junjun.Effect of molybdenum on crack sensibilities of laser cladded NiCrBSi alloy coatings[J].Transactions of The China Welding Institution,2009,30(2):68-70. |
| |
| Authors: | ZHANG Ping YUAN Jinping SUN Lei and ZHAO Junjun |
| |
| Affiliation: | National Key Laboratory for Remanufacturing;Academy of Armored Forces Engineering;Beijing 100072;China |
| |
| Abstract: | Five kinds of coatings have been prepared on the surface of 45CrNi steel plates using laser cladded technique by adding 0,2.5 wt.%,5 wt.%,7.5 wt.% and 10 wt.% Mo into the NiCrBSi alloys.The effect of molybdenum on the crack sensibitities of laser cladded NiCrBSi alloy coatings of these five kinds of coatings were investigated by oil whiting test.Crack sensibitities are affected by the coefficient of thermal expansion of the coatings and the solidification characteristics and microstructures.The research res... |
| |
| Keywords: | laser cladded crack sensibility coefficient of thermal expansion NiCrBSi alloy |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
