lll. Internal stress (residual stress) 1 Definition 2 Formation macroscopIc 3. Classification mIcroscopIc Bauschinger effect Previous extension will increase the strength in subsequent extension while decrease the strength in subsequent compression◆ Ⅲ.Internal stress (residual stress) 1. Definition: 2. Formation: 3. Classification: Baushinger effect: Previous extension will increase the strength in subsequent extension while decrease the strength in subsequent compression. macroscopic microscopic