Mechanical properties and grindability of experimental Ti-Au alloys
Mechanical properties and grindability of experimental Ti-Au alloys
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DOI：
10.4012/dmj.23.203
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发表时间：
2004-06-01
影响因子：
2.5
通讯作者：
Okuno, O
中科院分区：
文献类型：
--
作者：
Takahashi, M;Kikuchi, M;Okuno, O
制备实验Ti-Au合金（5、10、20和40质量% Au）。研究了钛金合金铸件的机械性能和磨削性能。当金的浓度增加到20%时，Ti-Au合金的屈服强度和抗拉强度变得更高，而没有明显恶化其延展性。这种较高的强度可以通过钛的固溶强化来解释。Ti-40%Au合金的脆性主要是由于金属间化合物Ti 3Au在晶界附近大量析出所致。在任何转速下，钛金合金与纯钛的磨削速率和磨削比均无显著性差异。
Experimental Ti-Au alloys (5, 10, 20 and 40 mass% Au) were made. Mechanical properties and grindability of the castings of the Ti-Au alloys were examined. As the concentration of gold increased to 20%, the yield strength and the tensile strength of the Ti-Au alloys became higher without markedly deteriorating their ductility. This higher strength can be explained by the solid-solution strengthening of the a titanium. The Ti-40%Au alloy became brittle because the intermetallic compound Ti3Au precipitated intensively near the grain boundaries. There was no significant difference in the grinding rate and grinding ratio among all the Ti-Au alloys and the pure titanium at any speed.