Influence of composition and purity on tensile properties of Ni-Ti alloy castings.
Influence of composition and purity on tensile properties of Ni-Ti alloy castings.
复制标题
成分和纯度对镍钛合金铸件拉伸性能的影响。
DOI：
10.4012/dmj.11.157
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发表时间：
1992
影响因子：
2.5
通讯作者：
H. Hamanaka
中科院分区：
文献类型：
--
作者：
T. Yoneyama;H. Doi;H. Hamanaka
采用拉伸试验和差示扫描量热法（DSC）研究了钛的成分和纯度对牙科用Ni-Ti合金铸件力学性能和相变温度的影响。锭的组成为钛含量的49.0-49.2原子%。使用相对高纯度的三个等级的钛作为起始材料。结果表明，Ni-49.0Ti合金脆性偏大，Ni-49.2Ti合金的表观弹限强度低，延伸率大。残余应变随钛含量的增加而增加。即使钛纯度的小的降低也会影响拉伸性能和转变温度，由于转变温度的降低而导致高的表观弹限强度、低的残余应变和低的伸长率。
The influence of composition and purity of titanium on the mechanical properties and the transformation temperatures of Ni-Ti alloy dental castings was investigated by tensile testing and differential scanning calorimetry (DSC). The compositions of the ingots were 49.0-49.2 at% of titanium content. Three grades of titanium of relatively high purity were used as starting materials. The result showed Ni-49.0Ti to be a somewhat brittle property, and Ni-49.2Ti to have low apparent proof strength and large elongation. Residual strain increased with increasing titanium content. Even small reductions of titanium purity influenced the tensile properties and the transformation temperatures, causing high apparent proof strength, low residual strain and low elongation because of the reduction in transformation temperatures.