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首页> 外文期刊>Materials Science and Engineering. A, Structural Materials >Study of transformation behavior in a Ti-4.4 Ta-1.9 Nb alloy
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Study of transformation behavior in a Ti-4.4 Ta-1.9 Nb alloy

机译：Ti-4.4 Ta-1.9 Nb合金中相变行为的研究

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摘要

An alloy of composition Ti-4.4wt.percent Ta-1.9 wt. percent Nb is being developed as a structural material for corrosion applications, as titanium and its alloys possess excellent corrosion resistance in many oxidizing media. The primary physical metallurgy database for the Ti-4.4 wt. percent Ta-1.9 wt. percent Nb alloy is being presented for the first time. Determination of the beta transus, M_s temperature and classification of the alloy have been carried out, employing a variety of microscopy techniques, X-ray diffraction (XRD), micro-hardness and differential scanning calorimetry (DSC). The beta transition temperature or beta transus determined using different experimental techniques was found to agree very well with evaluations based on empirical calculations. Based on chemistry and observed room temperature microstructure, the alloy has been classified as an alpha + beta titanium alloy. The high temperature beta transforms to either alpha' or alpha + beta by a martensitic or Widmanstatten transformation. The mechanisms of transformation of beta under different conditions and characteristics of different types of alpha have been studied and discussed in this paper.
机译：Ti-4.4wt。％Ta-1.9 wt。由于钛及其合金在许多氧化介质中都具有出色的耐腐蚀性，因此正在开发百分之一的铌作为腐蚀应用的结构材料。 Ti-4.4 wt。的主要物理冶金数据库。 Ta-1.9 wt。％ Nb合金百分比首次出现。使用各种显微镜技术，X射线衍射（XRD），显微硬度和差示扫描量热法（DSC）进行了β转变温度，MS温度和合金分类的测定。发现使用不同的实验技术确定的β转变温度或βtransus与基于经验计算的评估非常吻合。根据化学性质和观察到的室温微观结构，该合金已被分类为α+β钛合金。高温β通过马氏体或Widmanstatten转变为alpha'或alpha + beta。本文研究和讨论了在不同条件下β转化的机理和不同类型的α的特征。

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