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PHASE TRANSITIONS AND STABILITY OF GROUP IV BCC METALS

机译:IV族BCC金属的相变和稳定性

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Born stability criteria were employed in the framework of extended generalised exponential potential to calculate the theoretical strength and range of stability of a perfect uniaxially stressed crystal lattice of group IV bcc metals: titanium, zirconium, and hafnium. The analysis depicts two ranges of stability, a bcc phase and a body centered tetragonal phase. The computed value of theoretical strength and strain of bcc Ti, Zr and Hf agree satisfactorily with the experimentol limits. The second-order elastic constants C_(11) and C_(12) were also computed.
机译:在扩展的广义指数势的框架内采用Born稳定性准则来计算IV bcc组金属的完美单轴应力晶格的理论强度和稳定性范围:钛,锆和ha。该分析描述了两个范围的稳定性,即bcc相和以体心为中心的四方相。 bcc Ti,Zr和Hf的理论强度和应变的计算值与实验极限值令人满意。还计算了二阶弹性常数C_(11)和C_(12)。

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