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??????? ???????? ???? ??? ???????? ?? ???? ??????? ??????? ????? ?????????? 18 ??

????? ??????? ?????????? ??????? ????? ??????? ???? ?????? ???? ?????? ?????? ?? ?????? ????? ????? ????. ????? ??? ?????? Cr18% ? Ni8% ? ???? ?????? ??? ???? ???????? ?????. ???? ? ????? ??????? ?????????? ??????? ????? ??????? ???? ?????? ? ???????? ? ????? ????? ??????? ??????? ????? ??????. ??? ??? ? ?? ?? ???? ????? ???????? ? ?????? ?? ????? ????? ?????? ???????? ?? ??????? ??????? ????? ?????????? ??? ???????? ?????? ? ????? ?? ????? ?? ???? ?????? ?? ?????? ??? ?????? ??? ??????? ???????? ? ????? ????? ? ????? ?????? ? ????? ?????? ??????? ? ????? ??? ???? ? ??? ??? ???.

????? ???? ??????? ????????

?????? ??????? ??????? ????????

??? ?????? ??????? ??? ??? ????? ?????? ?? ??????? ?????????? ??????? ?????. ????? ???? ?????? ??? ??????? ???????? ? ????? ????? ??????? ????? ???? ????? ? ?????? ??? ??? ??????? ???????? ??? ????? ??? ????. ???? ?????? ??????? ????? ?????? ???????? ?????????? ???? ????? ?? ????? ????? ??????. ????? ???? ??????? ?????????? ??? ?????? ????? ?????? ?? ???? ???? ????? 500 ~ 800 ℃ ? ???? ???? ?????? ????? ??????? ????? ?????? ?????? ??? ?????? ??? ???????? ???? ?? ????? ?? ?????? ? ???? ??? ??????? ?? ????? ??? ???? ?????? ?? ?????? ?????? ?? ?????? ?????? ? ????? ??? ????? ????? ?????? ?? ??????? ??? ??? ?? ??????? ?????? (w (CR) 12.5%) ??????? ??????? ? ???? ????? ???? ??????? ????? ????? ?????? ??? ??????? ????????. ???? ??????? ?? ?????? ??? ??????? ???????? ?? ????? ???? ??????? ??????? ?? HAZ ???? ?? ??????? ???? ???? ???? ???? ????? ??????? ?????? ??? 600 ℃ ? 1000. ?? ???? ??? ?????? ??????? ?? ????? ????? ?????? ??? ???? ?????? ??????????. ???? ???????? ???????? ???????? ?????? ???? ?????? ??????? ?? ???:

????????? ??????? (???? ???? ? ???? ???? ?????) ????? ????? ???????? ?

② ??? ????? ????? ??????? ?? ?????? ??????? ????? ?????? ??? ??????? ? ???? ??????? ???? ?????? ??? ??????? C ??? ?? 0.03% ?

③ ????? ???? ? ????? Cr ??? ???? ?????? ????? ???? ?? ?????? ??? ?? ?????????? ? ??? ???? ?? ????? ??? ?????? ?? ???? ?????? ?????????? ?

④ ???? ?? ???? ????? Ti ? Nb ?????? ???? ??? ??? ???? ???????? ?????? ??????? ??????? ?? ??????? ????? ?????? ??? ????? ?????? ?????? ?? ????? ??????? ? ???????? ???? ??????? ?????? ??? ???? ?????? ??????????.

?????? ???????? ??????? ????????

????? ????? ?????? ?????? ?? ??????? ??????? ??????? ????? ???? ???? ?????? ?????. ?? ???? ???? ??? ??????. ?????? ?? ???? ?????? ??????? ????? ??????? ?????. ???? ?????? ?? ??????? ???? ???? ??? ????? ?????? ?????? ?? ??????? ??????? ??????? ????? ?? ?? ???? ?????? ? ??? ?? ??? ??????? ??????? ????? ??????? ???? ?????? ????? ??????? ???????? ?????? ??????? ?????? ???????? ????????.

??????? ???????? ???? ??????? ?? ???? ??????? ??????? ????? ?????????? 18cr 2

???????? ???????? ?????? ???? ???? ??????? ?? ??? ???:

① ???? ??????? ????? ???????? ?????????? ???? ????? ?????? ???? ????? ?????? ???????? ?

② ?????? ?????? ?? ??????? ?? ??????? ??????? (???? ???????? ?????????? ??? ??? ???) ?

③ ?????? ????? ?????? (?????? ??????? ? ???? ??????): ???? ????? ?????? ????? ???? ????????? ?

?? ????? ?????? ???? ??? ??? ?? ????? ????? (??? ???????) ?

⑤ ????? ????? ?????? ???? ????? ?????? ??????? ?

⑥ ???? ???? ??????: ??? ???? ?????? ??? ?????? ?? ??????? ?? ??????? ?????????.

 

????? ?????? ???????? ??????? ??????? ????????

?????? ??????? ?? ??????? ?????????? ??????? ????? ?? ?? ?????? ???? ?????? ? ????? ??? ??????? ????? ????? ???? ?????? ?????? ????? ??????. ?? ??? ????? ? ???? ???????? ??????? ?? ???? ?????? ??? ???????? ? ???? ????? ??? ????????. ??????? ???????? ?? ??? ???:

① S ? P ? C ??? ??? ??? ?? ???? ?????? ?????? ???? ???????? ?? Ni (??? ???? ?????? ? ???? ?????? NIS + Ni ?? 644 ℃) ? ??? ???? ??? ???? ?????? ?

② ????? ??????? ?????????? ??????? ????? ?????? ??????? ??????? ??? Liquidus ?????? ? ???? ??????? ?????? ? ??????? ????? ?????? ? ?????? ????? ??? ????? ??????? ?

③ ???????? ???????? ????? ????? ? ?????? ?????? ????? ???? ? ???? ?? ????? ????? ???????.

??????? ???????? ???? ??????? ?? ???? ??????? ??????? ????? ?????????? 18cr 3

??????? ???????? ???? ??????? ?? ???? ??????? ??????? ????? ?????????? 18cr 4 

???? ???????? ???????? ???? ???? ?????? ?????? ??????? ?? ???:

??? ?????? ??????? ??????? ?????? ?? ??????? ????????? ?? ?????? ??????? ????? ?????? ?????? ?

② ??? ????? ????? 5% ?? ?????? ?? ?????? ? ??? ???? ????? ????? ?????????? ???????? ?

③ ?? ?????? ????? ???? ????? ?????? ???????.

?????? ?? ????? ?????? ?? ??????? ????????

?? ????? ????? ?????? ?? ???? ?????? ?? ??????? ?????????? ??? ???????? ?????? ???????? ????? ????? α (σ) ? ????? ???? ????? ???? ????? ??? ?????? ??????? ?????? ??????. ???? ???? ??? ??????? ? ???? ???? ??? ???? ???? ??????? ???????? ? ??? ???? ??????? ? ??? ????? ???? ???? ??? ?????? ??????????? ??????. ?? ???? ??? ?????? ??????? ?????? ? ??? ???? ????? ?? ?????? ?????? ?? ???? ??????. ??? ??? ? ?????? ??? ???? ????? ???? ?????? ???????? ? ???? ????? ????? ?????? ? ??? ??? ????. ???? ? ??? ?????? ???? ?? ????? ?????? ?? ??? ????? ?????? ???? ????? ??????? ???????. ?? ??? ??????? ? ??? ??????? ???? ?????? ??????????.

??????? ???????? ???? ??????? ?? ???? ??????? ??????? ????? ?????????? 18cr 5

??? ??? ?????

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