A MASSIVE TRANSFORMATION MECHANISM IN Ti-48Al ALLOY

来源期刊：中国有色金属学报(英文版)1996年第3期

论文作者：Wen Cuie Lin Jianguo Chen Changqi

文章页码：68 - 73

Key words：TiAl alloy;　massive transformation;　diffusion controlled ledge growth mechanism

Abstract: The structure transformation mechanism in Ti-48Al(mole percent) intermetallic alloy was investigated when it was cooled rapidly from singleαphase region. The results showed that the massiveγwas obtained by anα→γmassive transformation during the quenching process in this alloy. A large number of defects, such as anti-phase boundaries (APBs), stacking faults, microtwins and dislocations, were observed to be within the massiveγ.Studies indicate that the massiveγnucleates with coherent interface and grows in a diffusion controlled ledge growth mechanism.