[Tensile deformation behaviour and mechanical properties in dental Ni-base casting alloys (author's transl)]

K Wakasa, M Yamaki, A Nakatsuka, T Nishimura
Shika Rikōgaku Zasshi. Journal of the Japan Society for Dental Apparatus and Materials 1981, 22 (59): 217-21
Tensile deformation behaviour and mechanical properties were studied in dental Ni-base casting alloys as 32 Ni-23 Cu-25 Mn(alloy 1) and 84 Ni-9 Cr systems (alloy 2). 1) Stress-strain curves of alloys 1 and 2 showed, respectively, a liner hardening-type and a type of a gradual increase in stress with tensile strain. 2) Specific deformation behaviours of alloys 1 and 2 with tensile strain, respectively, offered different values in mechanical properties; alloy 2 that showed larger elongation and strength than brittle alloy 1 indicated ductile characteristics of good elasticity and elastic regilience. 3) Fracture mechanism in alloys 1 and 2 was corresponding to intercrystalline crack i. e. brittle fracture and transgranular crack within cell structure i. e. ductile fracture, respectively.

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