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首页> 外文期刊>Journal of engineering materials and technology >Mechanical Performance Evaluation of Cast Magnesium Alloys for Automotive and Aeronautical Applications
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Mechanical Performance Evaluation of Cast Magnesium Alloys for Automotive and Aeronautical Applications

机译：汽车和航空用铸造镁合金的机械性能评估

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摘要

The potential of cast magnesium alloys for being used as structural materials in lightweight applications is assessed. The ability of the alloys for mechanical performance is evaluated and compared against the ability of widely used structural aircraft cast aluminum alloys. The specific quality index Q_(DS), devised for evaluating both cast and wrought aluminum alloys, will be exploited to evaluate the ability of a number of cast magnesium alloys for mechanical performance. The exploited quality index Q_(DS) involves the material's yield strength R_p to account for strength, the strain energy density W to account for both tensile ductility and toughness, and the material's density ρ. The effects of differences in chemical composition and heat treatment conditions on the mechanical performance of cast magnesium alloys have been assessed. The use of the quality index Q_(DS) has been proved to appreciably facilitate the evaluation of the mechanical performance of cast magnesium alloys and also the comparison between alloys of different base materials. The results quantify the gap to be closed such as to involve cast magnesium alloys in aircraft structural applications.
机译：评估了铸造镁合金在轻量化应用中用作结构材料的潜力。评估了合金的机械性能，并与广泛使用的结构飞机铸造铝合金的能力进行了比较。专为评估铸造铝合金和锻造铝合金而设计的特定质量指标Q_（DS）将用于评估多种铸造镁合金的机械性能。利用的质量指标Q_（DS）涉及材料的屈服强度R_p以考虑强度，材料的应变能密度W涉及拉伸延展性和韧性，以及材料的密度ρ。已经评估了化学成分和热处理条件的不同对铸造镁合金机械性能的影响。事实证明，使用质量指数Q_（DS）可以显着地促进镁合金铸造机械性能的评估，以及不同基材的合金之间的比较。结果量化了要闭合的间隙，以便在飞机结构应用中涉及铸造镁合金。

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