摘要
A new diffusion bonding technique combined with laser cladding process was developed to join TiAl alloy to itself and Ti alloys. In order to enhance the weldability of TiAl alloys, Ti alloy coatings were fabricated by laser cladding on the TiAl alloy. Ti powder and shaped Ti alloy were respectively used as laser cladding materials. The materials characterization was carried out by OM, SEM, EDS and XRD analysis. The results show that the laser cladding process with shaped Ti alloy remedy the problems present in the conventional process with powder, such as impurities, cracks and pores. The diffusion bonding of TiAl alloy with Ti alloy coating to itself and Ti alloy was carried out with a Gleeble 1500 thermal simulator. The sound bonds of TiAl/TiAl, TiAl/Ti were obtained at a lower temperature and with shorter time.
A new diffusion bonding technique combined with laser cladding process was developed to join TiAl alloy to itself and Ti alloys. In order to enhance the weldability of TiAl alloys, Ti alloy coatings were fabricated by laser cladding on the TiAl alloy. Ti powder and shaped Ti alloy were respectively used as laser cladding materials. The materials characterization was carried out by OM, SEM, EDS and XRD analysis. The results show that the laser cladding process with shaped Ti alloy remedy the problems present in the conventional process with powder, such as impurities, cracks and pores. The diffusion bonding of TiAl alloy with Ti alloy coating to itself and Ti alloy was carried out with a Gleeble 1500 thermal simulator. The sound bonds of TiAl/TiAl, TiAl/Ti were obtained at a lower temperature and with shorter time.
出处
《中国有色金属学会会刊：英文版》
CSCD
2003年第5期1155-1159,共5页
Transactions of Nonferrous Metals Society of China
关键词
激光热处理
涂层
扩散结合
钛铝合金
laser treatment
coating
diffusion bonding
titanium
titanium aluminide alloy
