The Acoustic Emission Effects of Martensite Transformation in Alloys Cr12MoV and Fe-33Ni-4Ti-10Co

摘要

1 Introduction The method of acoustic emission (AE)as a new technique to study the processesin metals and alloys in the solid phase hasbeen widely used and developed since thelast 20 years. Martensite transformationis diffusionless. Because of changing fromone crystal structure to another by coopera-tive shear process the interfacial