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Kawabta等首次发现,Ti_(43)Al_(57)单晶化合物的强度,在某一温度以下表现出随温度上升而提高的反常效应(以下称为R效应)。而Lipisitt和Huang的研究工作指出,多晶TiAl(46—60at％Al)化合物,屈服强度随温度的升高而降低,与Kawabata的单晶实验结果
For the first time, Kawabta et al. Found that the strength of the Ti_ (43) Al_ (57) single crystal compound exhibits an anomalous effect (hereinafter referred to as R effect) increased with temperature rise below a certain temperature. However, the work of Lipisitt and Huang pointed out that the yield strength of polycrystalline TiAl (46-60at% Al) compound decreases with increasing temperature, which is in agreement with Kawabata’s single crystal experimental results