【摘要】 用透射电镜定位观察了(Y,Mg)-PSZ陶瓷马氏体相变的动态过程。在四方氧化锆互相顶撞的应力作用下,先产生一组马氏体亚结构,由于弛豫弹性应变再诱发另一组亚结构,二者形成(100)孪晶。同时,对马氏体相变过程作了晶体学研究。更多还原

【Abstract】 In sita observation under TEM was made of the dynamic process of martensitictransformation in the （Y, Mg）-PSZ ceramics. A group of substructural martensite variantsmay occur priorly under the contact stress between tetragonal ZrO₂ precipitates, the anotherone may be induced by the elastic strain relaxation, and both form （100） twins further. Thecrystallographic aspect of the martensitic transformation was also discussed.更多还原