Acta Metallurgica Sinica (English Letters) ›› 1991, Vol. 4 ›› Issue (6): 471-474.

• Research paper • Previous Articles    

THE MARTENSITIC TRANSFORMATION IN(Y,Mg)-PSZ CERAMICS

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

  • Received:1991-12-25 Revised:1991-12-25 Online:1991-12-25 Published:2009-10-10

Abstract: A dynamic process of the martensitic transformation in(Y,Mg)-PSZ ceramics was observed in situ using TEM.Under the effect of contact stress between tetragonal(t)-ZrO_2 precipi- tates,a group of substructural martensite variants may occur priorly and then another one was induced by the elastic strain relaxation,both form(100)_m twins further.In addition,the crystallography of the martensitic transformation was also discussed.

Key words: ceramics, ZrO_2, martensitic transformation