Effect of chromium content on mechanical properties of casting Ti-Cr alloys.
Effect of chromium content on mechanical properties of casting Ti-Cr alloys.
复制标题
DOI：
10.4012/dmj.2009-118
复制
发表时间：
2010-09
影响因子：
2.5
通讯作者：
M. Hattori;S. Takemoto;M. Yoshinari;E. Kawada;Y. Oda
中科院分区：
文献类型：
--
作者：
M. Hattori;S. Takemoto;M. Yoshinari;E. Kawada;Y. Oda
研究了一系列二元Ti-Cr合金的力学性能。铬含量范围为5至20质量%。通过铸造获得哑铃形和圆盘形试样，进行力学性能测试和显微组织观察。测定0.2%时的屈服强度（YS）、拉伸强度（TS）、伸长率（EL）和维氏硬度（Hv）。Ti-15 Cr的TS和YS在约880或900 MPa下与Ti-20 Cr相似，比cp-Ti高近55%。在所有Ti-Cr合金中，Ti-10 Cr的EL最低。在地表以下50 µm处，Hv的范围为370至420。在钛中添加15或20质量%的铬产生足够的强度和相对高的伸长率值。从机械性能的结果来看，含15或20质量%铬的钛铬合金适用于牙科修复体。
The mechanical properties of a series of binary Ti-Cr alloys were investigated. Chromium content ranged from 5 to 20 mass%. Dumbbell- and disk-shaped specimens of each alloy were obtained by casting for mechanical testing and microstructural observation. Yield strength (YS) at 0.2%, tensile strength (TS), elongation (EL) and Vickers hardness (Hv) were determined. The TS and YS of Ti-15Cr were similar to those of Ti-20Cr at approximately 880 or 900 MPa and higher than those of cp-Ti by nearly 55%. Among all Ti-Cr alloys, Ti-10Cr showed the lowest EL. At 50 µm below the surface, Hv ranged from 370 to 420. Addition of 15 or 20 mass% chromium to titanium yielded sufficient strength and relatively high elongation values. Judging from the results of the mechanical properties, the suitability of Ti-Cr alloys with 15 or 20 mass% chromium for use in dental prostheses.