Abstract
This study is to examine the relation between Ni contents and the weldability of WC-Ni Cemented Carbides. The WC-Ni specimens with Ni mass fractions of 0.1, 0.2, 0.3 and 0.4 were made from Vacuum Sintering Chamber (VSC) or Spark Plasma Sintering System (SPS). Ni bead was made on the surface of each specimen by TIG welding. As a result, weld cracks were observed in every specimen except for WC40%Ni by VSC. The weldability of WC-Ni will be estimated from the weld crack observation and the residual stress distribution obtained from X-ray diffraction method.
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