Characteristics 上浒充通大￥ SHANGHAI JIAO TONG UNIVERSITY 1.Shear mechanism and surface relief effect Surface Surface Relief (a) M A Invariant plane in austenite Martensite Schematic for Martensite Transformation habit plane (b) Fig.6.2 Illustrating how a martensite plate remains(macroscopically coherent with the surrounding austenite and even the surface it intersects. Lines on a polished surface are displaced, but remain continuous after the transformation Surface Reliefs K.Chen 8K. Chen Characteristics 8 Schematic for Martensite Transformation Surface Reliefs 1. Shear mechanism and surface relief effect Lines on a polished surface are displaced, but remain continuous after the transformation Surface