MIM Ti-6Al-4V合金における焼結敷板の機械的特性に及ぼす影響
MIM Ti-6Al-4V合金における焼結敷板の機械的特性に及ぼす影響
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MIM Ti-6Al-4V 合金烧结板坯力学性能的影响
DOI：
10.2497/jjspm.53.755
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
秀士 三浦
中科院分区：
文献类型：
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作者：
俊明 植松;芳典 伊藤;憲治 佐藤;秀士 三浦
钛及钛合金具有重量轻、强度高、耐腐蚀等上级性能。由于钛在高温下非常活泼，高温下的基体类型和长时间烧结会导致氧和碳的污染，从而导致机械性能变差。研究了ZrO 2和Y2 O3两种烧结基体对注射成型Ti-6Al-4V合金力学性能的影响，结果表明：烧结体的相对密度、显微组织和硬度基本不变，但拉伸性能随烧结基体的种类和烧结处理的不同而不同。以原始ZrO 2为基体的烧结体的氧含量随烧结时间的延长而增加，延伸率随之降低。而使用焙烧的ZrO_2和Y_2 O_3基片的压坯由于碳和氧含量低而表现出良好的拉伸性能。
Ti and Ti alloys show superior properties of lightweight, high strength and corrosion resistance, etc. Since Ti is very active at high temperature, the mechanical properties may be poor due to the oxygen and carbon contamination caused by type of substrate at high temperature and long time sintering. In this study, the effects of substrate for sintering on the mechanical properties of injection molded Ti-6Al-4V alloy were investigated using two types of substrates such as ZrO2 and Y2O3 (as-received or baked in vacuum).The relative density, microstructure and hardness of sintered compacts were changed hardly, but the tensile properties were changed by baking treatment and type of substrate for sintering. The oxygen content of the sintered compacts by using as-received ZrO2 substrate increased with increasing sintering time, then the elongation of the compacts were reduced. While the compacts using the baked ZrO2 and Y2O3 substrates showed good tensile properties because of low carbon and oxygen content.