共搜索到18651条信息,每页显示10条信息,共1866页。用时:0小时0分0秒500毫秒
for the lower and larger undercooling, and plastic deformation and fracture for the medium undercooling. Key words: Ni-Pb monotectic alloy; high undercooling; wear rate; wear mechanism CLC number: TG115.5... the dry sliding condition, the effect of load on the wear rate of Ni-Pb monotectic alloy under different undercoolings are shown in Fig.2. It can be seen that the wear rate of the alloy sharply......
structures and DTA analysis prove that liquid phase separation still occurs in the highly undercooled Ni-Pb hypermonotectic alloy melts, and liquid phase separation in the immiscible gap can not be fully inhibited by high undercooling and rapid solidification. Key words: Ni-Pb hypermonotectic alloy; monotectic cell; high undercooling; liquid-liquid phase separation; water-quenched microstructure......
......
......
......
into a periodic array of cells or dendrites have received particular attention from the metallurgists. In the present work, Cu-Pb monotectic alloy was directionally solidified over a wide range of composi- tions... of growth direction on the microstructure of unidirectionally solidified Cu-Pb monotectic alloy using zone-melt technique [J]. Journal of Crystal Growth, 2001, 222(4): 806-815. [13] CHADWICK G......
Microstructure Evolution of a Ternary Monotectic Alloy During Directional SolidificationShu Chen,Jiu-Zhou Zhao,Hong-Xiang Jiang,Jie HeInstitute of Metal Research,Chinese Academy of Sciences摘 要:A model was developed to describe the microstracture evolution in a directionally solidified ternary monotectic alloy.The directional solidification experiments......
......
......
%Pb.A sequence of morphologies from the bottom to the top of the Al-1.2 wt%Pb alloy casting(monotectic) can be observed:Pb-rich droplets in the aluminum-rich matrix,followed by a region...Microstructural Morphologies and Experimental Growth Laws during Solidification of Monotectic and Hypermonotectic Al-Pb AlloysAdrina P.Silva1,Amauri Garcia1,José E.Spinelli21. Department of Materials......