발간논문

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Vol.24, No.6, 680 ~ 687, 1986
Title
The Effect of Heat Treatment on Wear Resistance and Hardness of TiNi Shape Memory alloy
남태현Tae Hyun Nam, 천병선Byung Sun Chun
Abstract
The hardness of TiNi alloys containing Ni from 50 at.% to 53 at.% was measured. Wear test was performed by rubbing these alloys against SUS316 or S45C. The results obtained are as follows; 1) Microvickers hardness in low load from 10gf to 100gf was very high. This is thought to be caused by the rubber elastic effect, the martensitic characteristic of these alloys. 2) The quenched Ni-Ti alloy contained Ni above 51 at.%. The hardness of these alloys in the liquid nitrogen temperature were less than in room temperature. This is thought to be due to the two reasons; one is that Ms point is below the room temperature and martensitic transformation is induced by indenter during the hardness testing, the other is the intrinsic rubber elasticity of martensite. 3) SUS316 was adhered to Ni-Ti alloy and the weight of Ni-Ti alloy was increased by 3㎎. It is thought that this is due to the high work hardenability of TiNi alloy in -196℃.
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