Transformation toughening occurs when a material undergoes stress-induced section transformation. Some ceramics are effective at undergoing stress-induced martensitic transformation, which consists of an energy barrier that must be conquer by absorbing energy.[23] Martensitic transformations are diffusionless shear transformations[24] involving the changeover in between an "austenite"... https://louisiihec.ampedpages.com/an-unbiased-view-of-aluminiumoxide-66122413