首页|Unravelling the combined effect of cooling rate and microalloying on the microstructure and tribological performance of Cu_(50)Zr_(50)
Unravelling the combined effect of cooling rate and microalloying on the microstructure and tribological performance of Cu_(50)Zr_(50)
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
The combined effect of the cooling rate and microalloying has been studied from suction casted Cu_(50)Zr_(50), Cu_(49.5)Zr_(50)Fe_(0.5) and Cu_(49)Zr_(50)Fe_1 at.% rods of 2 mm and 4 mm diameter. For the 2 mm samples, ～1000 K/s cooling rate, the microstructure mostly consists of B2 CuZr austenite and it is basically the same for all compositions. However, 0.5 at.% Fe addition promotes the formation of stress-induced B19' martensite upon wear testing thus improving the wear resistance of the alloy. For the 4 mm samples, ～250 K/s cooling rate, a multiphase intermetallic is predominant and when microalloyed with 0.5 at.% Fe, a relatively large volume fraction of as-cast B33 CuZr martensite is formed thus resulting in a reduction of the wear resistance. At high cooling rate the wear mechanism is predominantly delamination wear while for low cooling rate the large continuous grooves are indicative of abrasive wear.
NSTL
Elsevier
