Amorphization of Fe(38)Ni(30)Si(16)B(14)V(2) surface layers by laser cladding

作者：Zhu Qing jun; Wang Xin hong^*; Qu Shi yao; Zou Zeng da

来源：Transactions of Nonferrous Metals Society of China, 2008, 18(2): 270-273.

DOI：10.1016/S1003-6326(08)60047-3

• amorphization
• laser cladding
• wear resistance

Fe(38)Ni(30)Si(16)B(14)V(2) amorphous composite coatings were fabricated by laser cladding on AISI 1045 steel in order to increase the wear resistance. The phase and microstructure of the coatings were analyzed by X-ray diffractometry and transmission electron microscopy. The wear properties of the coatings were also investigated by means of sliding wear test. The results show that the coating consists of amorphous phase in majority and nanocrystalline phase in minority. The amorphous coatings can be obtained while the scanning speed is 3 500 mm/min and the laser power is 4.8 kW. With increase of the laser power, the amorphous phase in the coating increases when it is lower than 4.8 kW. A gradient distribution of the microhardness ranges from Hv(0.2) 1 208 to Hv(0.2) 891 in the coating from top surface of the coating to the substrate. The amorphous coating is found to possess better property of wear than AISI 1045 steel substrate.

• 出版日期2008-4
• 单位山东大学