Title :
Anti-welding property and fracture mechanism of CuCr contact materials
Author :
Yang, Zhimao ; Wei, Shiping ; Qiu, Chengfeng ; Zhang, Jingchao ; Ding, Bingjun ; Wang, Xiaotian
Author_Institution :
Dept. of Mater. Sci. & Eng., Xi´´an Jiaotong Univ., Shaanxi, China
Abstract :
The welding strengths of different CuCr contact materials are measured and the fracture morphologies are observed by scanning electron microscope. Experimental results show that carbon added to CuCr alloys can improve the anti-welding property. Carbide films on the surface of Cr particles reduce the fracture stress of CuCr alloys and influence the microstructure of the weld zone.<>
Keywords :
chromium alloys; copper alloys; electrical contacts; fracture; fracture toughness testing; scanning electron microscope examination of materials; welding; CuCr contact materials; CuCrC; anti-welding property; carbide films; fracture mechanism; fracture morphologies; fracture stress; microstructure; scanning electron microscope; welding strengths; welding test; Chromium; Conductivity; Copper alloys; Dielectric measurements; Furnaces; Mechanical factors; Powders; Testing; Voltage; Welding;
Conference_Titel :
Electrical Contacts, 1992., Proceedings of the Thirty-Eighth IEEE Holm Conference on
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-0576-0
DOI :
10.1109/HOLM.1992.246929
