Possible alternations in the HAZ include the following（）

A.recrystallization and grain growth

B.forming the residual stresses

C.steel may have been heated to temperatures sufficiently high so as to form martenite

D.stainless steel may be “sensitized” during welding

正确答案：recrystallization and grain growth；forming the residual stresses；stainless steel may be “sensitized” during welding