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首页> 美国政府科技报告 >The Relationship between the Microstructure and Age Hardening Response in the Metastable Beta Titanium Alloy Ti-11.5Mo-6Zr-4.5Sn (Beta III).
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The Relationship between the Microstructure and Age Hardening Response in the Metastable Beta Titanium Alloy Ti-11.5Mo-6Zr-4.5Sn (Beta III).

机译：亚稳钛钛合金Ti-11.5mo-6Zr-4.5sn（Beta III）微观结构与时效硬化响应的关系。

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The effect of solution treatment temperature and oxygen content on the microstructure and age hardening response of the metastable beta alloy Ti-11.5Mo-6Zr-4.5Sn have been studied. Kinetics of formation of the equilibrium alpha-phase and the metastable omega-phase have been followed using Vicker's hardness measurements. These kinetics have been examined as a function of solution treatment temperature (above or below the beta-transus) and initial oxygen of the material. It has been found that the kinetics of formation of omega-phase are relatively insensitive to these variables whereas alpha-phase is quite sensitive. The effect of these variables on microstructure has been evaluated using light microscopy, replica electron microscopy and thin foil transmission electron microscopy. Several duplex aging treatments starting in the omega-phase temperature range and finishing in the alpha-phase temperature range were also examined. TEM of these samples has provided some inside into the mechanism of the omega-approach alpha in-situ transformation. (Author)

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