Investigation on High Power Diode Laser Cladding of Ni-Fe-Cr Based Alloy Coatings
Appropriate laser cladding processing parameters for a Ni-Fe-Cr based alloy coating with good quality were studied using 3.5 kW diode laser. The characterization of the coating was investigated, and the influence of each parameter was analyzed. The mechanical properties and wear resistance of the coating were compared with the corresponding chemical composition wrought and cast materials. The results showed that a coating with aspect ratio about 3, dilution ratio 8％-10％ and wetting angle 35°-50° could be formed with the laser power 1200-1500 W, travelling speed 8-10 mm/s, powder feed rate 16-18 g/min and shield gas flow 15 1/min. The tensile strength of the coating reached 953 MPa which was higher than that of wrought material 918 MPa and cast material 830 MPa. The microhardness of multi-layer coating was higher than that of single layer coating. The wear resistance of the coating was at the same level with the wrought and cast materials.
Ni-Fe-Cr based alloy coating processing parameter mechanical property
Zhang Yaocheng Huang Jian Nie Pulin Liu Honggang Li Zhuguo Wu Yixiong
Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China
国际会议
西安
英文
199-202
2011-05-11（万方平台首次上网日期，不代表论文的发表时间）