Behavior of oxygen in DG™ invar-Cu alloys and its effects on mechanical and physical properties

Abstract

The invar alloy powder, mixed with different Cu powder contained different content of oxygen, was compacted and sintered into four sorts of DG™ invar-Cu low expansion and high conductivity alloy specimens. The mechanical and physical properties of the alloys were tested and analyzed. The behavior of oxygen and its effect mechanism were discussed. The results show that the ultimate strength decreases with the increase of oxygen content, so does the coefficient of thermal expansion (α) whereas the α platform is shortened.

Keywords

low expansion and high conductivity alloy / behavior of oxygen / physical properties / mechanical properties

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