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論文
論文
1. Misorientation dependence of intergranular embrittlement of Cu-2.0 wt.% Sb bicrystals
Monzen, Ryoichi ; Matsuda, Osamu ; Miura, Hiromi
出版情報: Materials Science and Engineering A.  387-389  pp.424-427,  2004-12-01.  Elsevier
URL: http://hdl.handle.net/2297/1673
概要: Bicrystals of a Cu–2.0 wt.% Sb alloy with different [0 0 1] symmetric tilt boundaries were tensile tested at several tem … peratures from 77 to 743 K. The dependence of Sb segregation level at [0 0 1] tilt boundaries on the misorientation angle also was examined by energy-dispersive X-ray spectroscopy. The fracture behavior was sensitive to the misorientation angle and test temperature. Both the fracture behavior at 77 K and the Sb segregation level showed a good correlation with the grain-boundary energy of pure Cu. The higher the grain-boundary energy, the higher the Sb segregation level and the higher the degree of grain-boundary embrittlement. 続きを見る
2.

論文
論文
2. Bi偏析によるCu双結晶粒界のぜい化
門前, 亮一 ; 岡本, 智宏 ; 久世, 卓矢 ; 三浦, 博己
出版情報: 材料.  48  pp.398-402,  1999-04-15.  日本材料学会
URL: http://hdl.handle.net/2297/12435
概要: 金沢大学理工研究域機械工学系<br />Bi-doped Cu bicrystals with various[001]and[011]twist boundaries have been tensile tested at room te … mperature and 543K. The fracture stress and fracture strain depend strongly on the misorientation angle and tensile temperature. The difference in the degree of embrittlement among different grain boundaries is more significant at 543K. The fracture stress and fracture strain at 543K against misorientation curves display some clear peaks ; θ=23°(Σ13A), 28°(Σ17A), 37°(Σ5)and 44°(Σ29A)for[001]boundaries and θ=50°(Σ11), 59°(Σ33C), 71°(Σ3)and 83°(Σ57B)for[011]boundaries. For the two types of grain boundary, a good correlation is found between the degree of embrittlement and grain-boundary energy. A higher-energy boundary is more brittle and fractures more easily with a lower tensile stress. The fracture stresses of[001]boundaries are greater than those of[011]boundaries. 続きを見る