(Y,Mg)-PSZ陶瓷马氏体相变

金属学报, 1991, 27(3): 86-88.

(Y,Mg)-PSZ陶瓷马氏体相变

太原机械学院

天津大学

关键词：陶瓷 , ZrO_2 , martensitic transformation

MARTENSITIC TRANSFORMATION IN (Y,Mg)-PSZ CERAMICS

DAI Zurong , LI Baocheng Taiyuan Institute of Mechanical Engineering , WU Houzheng , CHEN Yuru , LIU Wenxi Tianjin University

Keywords： ceramics , 氧化锆 , 马氏体相变

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。

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 ZrO_2 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.

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