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首页> 外文会议>Annual Meeting Exhibition of The Minerals, Metals Materials Society >Investigation of Martensite α' Phase Transformation During Heat Treatment of High-Speed Selective Laser Melted Ti6Al4V Components
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Investigation of Martensite α' Phase Transformation During Heat Treatment of High-Speed Selective Laser Melted Ti6Al4V Components

机译：高速选择激光熔化Ti6Al4V部件热处理中马氏体α'相变的研究

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摘要

This study presents the investigation of microstructural and hardness properties of high-speed selective laser melted (SLM) produced Ti6Al4V coupons after various heat treatments. Heat treatment was performed in order to homogenize and improve the micro structure of the as-built Ti6A14V by transforming the acicular martensitic α' phase. Optimized heat treatment parameters were selected based on their impact on the transformation of the acicular martensite α' phase and the phase morphology produced after heat treatment. It was found that sub-transus heat treatments do not completely transform the martensite α' phase, but result in the decrease in hardness. Heat treatment at 1000 °C, for 2 h followed by furnace cooling, transformed the martensitic α' phase into a lamella α+β phase. A relationship of hardness, as a function of heat treatment temperature, is also reported.
机译：该研究介绍了在各种热处理后产生的高速选择性激光熔化（SLM）产生的Ti6Al4V试样的微观结构和硬度特性的研究。通过转化针状马氏体α'相，进行热处理以均匀化和改善嵌造Ti6a14V的微结构。根据其对热处理后产生的针状马氏体α'相的变化和相位形态的影响选择优化的热处理参数。结果发现，次次传递热处理不会完全转化马氏体α的相位，但导致硬度降低。在1000℃下热处理，2小时，然后炉冷却，将马氏体α'相变为薄片α+β相。还报道了作为热处理温度的功能的硬度关系。

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