51吃瓜

??????? ??????? ????? ????????um ????? ????? ?? ?????????????? ???? ?????????? ???????? ??? ??????? ?????????? ?????????. ?? ??????? ??????? ????? ????????um ????? ????? ??????? ???? ?????????? ?????????? ????????, ????? ? ????????? ?????? ?? ?? ??????????? ??? ????????? ??????????? ???? ?? ????????? ???????? ?????? ?? ????????? ??? ?? ???????, ??? ???? ???????????? ??? ???? ??? ??? ??? ??? ?????????? ??????????.

1. 2. ?? ?????? ??? ?????? ???? ?????????????, ????????????? ??? ?????????????. 3. ?? ????? ??????? ??? relatively stable. 4. Twinning: fcc, bcc, hcp ????? ???? ?????????? ?????????? ????????????? ??? ????????; ?????????? ????? ??? ?????? ?????? ???????????? ??? ??? ?????????? ?????????? deformation, adjust the direction of the sliding surface 5. Yield phenomenon: Annealing, normalizing, and tempering are common in medium and low carbon steel and low alloy steel, which can be divided into discontinuous yield and continuous yield; ?????????? ???????: ??? ?????? ??????? ???? ??????????????? ??? ??? ??????????, σ s. 000

?? ???????? ??? ??? ?????????? ???? ??? ???????????deformation ???? ??? ?????????? ?????????? ???? ????????????????????? ??????? ??? ?????? ????????????? ?????????? ??????. ?? ?????? ????????? ????? ??? ??????? ????????? ?????? ????? ?? ????????????? ????????????? ????????? ????????????, ????? ????????? ????? ????????? ????????? ??? ?? характеристики ??? ????????? ??? ???????????, ??? ???? ???????????