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| 铝青铜表面激光熔覆层组织与性能研究 | |
| 引用本文： | 徐建林,杨波,高威,王智平,龙大伟,居春艳,于涛.铝青铜表面激光熔覆层组织与性能研究[J].航空材料学报,2009,29(1):63-67. |
| 作者姓名： | 徐建林 杨波 高威 王智平 龙大伟 居春艳 于涛 |
| 作者单位： | 1. 兰州理工大学,甘肃省有色金属新材料省部共建国家重点实验室,兰州,730050;兰州理工大学,有色金属合金及加工教育部重点实验室,兰州,730050 2. 中国第二重型集团公司重型压力容器与核电技术研究所,四川,德阳,618000 3. 北京航空材料研究院,北京,100095 |
| 基金项目： | 兰州理工大学博士基金 |
| 摘 要： | 采用激光熔覆技术在QAl9-4铝青铜表面熔覆了一层Ni基合金层,以提高QAl9-4铝青铜的耐磨性.为了提高QAl9-4铝青铜对激光的吸收率,实验采用少量自制的粘结剂并配合压力机将合金粉末预置在QAl9-4铝青铜表面,然后激光重熔.通过对QAl9-4铝青铜表面熔覆层组织研究分析表明:熔覆层与基体形成了良好的冶金结合,无裂纹缺陷的存在;熔覆层组织受凝固速度的影响较大,其表面组织为胞状晶,中部为发达的树枝晶,结合区上部由于基体的激冷作用而呈细晶区,细晶区以下又以树枝晶和胞状晶为主.激光熔覆层的平均硬度是QAl9-4铝青铜基体硬度的3倍多. |
| 关 键 词： | 铝青铜 激光熔覆 表面改性 |
Microstructure and Performance of Laser Cladding on Surface of Aluminum Bronze |
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| XU Jian-lin,YANG Bo,GAO Wei,WANG Zhi-ping,LONG Da-wei,JU Chun-yan,YU Tao.Microstructure and Performance of Laser Cladding on Surface of Aluminum Bronze[J].Journal of Aeronautical Materials,2009,29(1):63-67. | |
| Authors: | XU Jian-lin YANG Bo GAO Wei WANG Zhi-ping LONG Da-wei JU Chun-yan YU Tao |
| Abstract: | A Ni matrix alloy cladding was deposited on the surface of QAl9-4 aluminum bronze by laser remelted technology to improve its wear resistance.In order to improve absorptivity of aluminum bronze for laser irradiation,some alloy powders were pre-deposited on the surface of QAl9-4 aluminum bronze by compressive equipment and some binder,which was developed by researcher.Then,these alloy powders were remelted by laser.The analysis of the laser cladding on the surface of QAl9-4 aluminum bronze shows that the com... |
| Keywords: | aluminum bronze laser cladding surface modification |
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