Abstract
Sixteen kinds of Ni base alloys, adding 0〜12mass% Mo and 0〜6mass% Si to 80Ni-20Cr alloy were prepared and cast.The mechanical properties and tarnising resistance of these alloys were measured.The tensile strength decreased to below 35kgf/mm2 in the composition range including from about 1 to 3% Si and from 0 to about 6% Mo.The elongation was decreased to 3% containing over 2.5% Si and the elastic limit increased with increasing Mo and Si contents.The tarnishing resistance hardly changed in this alloy series, and the brightness L*represented by CIE system was 71±1, but improved slightly in the composition with a Si content of about 3%.
