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日本丰田汽车公司等在SAE2000世界大会上介绍了一种能有效降低成本的粉末冶金锻造方法的研究开发情况。用该方法制造汽车发动机钛气门，可减重40%。进气门是用Ti-6Al-4V合金通过粉末冶金锻造工艺制取的。排气门是由复合材料制造，该复合材料采用一种新的合金粉未以硼化物为强化
Japan’s Toyota Motor Corporation and other SAE2000 World Conference introduced a can effectively reduce the cost of powder metallurgy forging research and development. The method of manufacturing automotive engine titanium valve, can be reduced by 40%. Intake valve is made of Ti-6Al-4V alloy by powder metallurgy forging process. Exhaust valve is made of composite material, the composite material using a new alloy powder is not boride to strengthen