E faʻafefea ona faʻafefeteina faʻamaʻi faʻamaʻi

Fa'amuli-fa'avevela togafitiga ofa'ailoga tetelemulimuli anefa'ameameafaia, i le taimi lava e uma ona taʻua le togafitiga vevelamae'a fa'ameameatogafitiga vevela. O le faamoemoega omae'a fa'ameameavevela togafitiga o forgings tetele e masani lava e de-faamamafa, recrystallize saito faamamaina ma dehydrogenation i le taimi lava e tasi.
1. Recrystallization togafitiga Ina ua mavae le tele o recrystallization togafitiga o forgings tetele, saito faamamaina, microstructure faaleleia, faaleleia faatinoga.
2. Dehydrogen annealing o le a faaitiitia le hydrogen i totonu o lefa'ameameas i le faʻatapulaʻaina o mea o loʻo i lalo o le hydrogen, ma faia lona tufatufa toniga, ina ia aloese mai le lamatiaga o le paʻepaʻe, hydrogen embrittlement.
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O le solubility ma le diffusion coefficient o le hydrogen i le vaega 7 ma le vaega A e eseese, ae maise o le maualalo o le solubility ma le tele o le diffusion coefficient o le hydrogen i le vaega A, lea e faʻaauau ai le faʻasalalauina o le hydrogen i fafo i le faagasologa o le faʻafefe. Dehydrogenation annealing e masani ona tuʻufaʻatasia ma recrystallization. O le vevela o le dehydrogen annealing e masani lava 650 ℃. A maeʻa le faʻafefe, e tatau ona faʻamalo lemu i le mea e mafai ai e puipuia ai le faʻalavelave fou i totonu. O le malulu lautele e vaevaeina i ni vaega se lua: i luga aʻe o le 400 ℃, ona o le palasitika lelei o le sila, e le faigofie ona faʻapipiʻi le faʻalavelave i totonu, o lea e mafai ai ona vave le malulu; I lalo ifo o le 400 ℃, o le a faʻagesegese le tau malulu. Mo faʻamaʻi faʻatasi ai ma le tele o mea faʻapipiʻi ma tulaga maualuga manaʻomia, e manaʻomia se tasi poʻo le tele foi o le faʻafefeteina o le vevela pe a uma le faʻamaʻiina, ina ia faʻaleleia le fausaga ma le faʻatinoga o faʻamaʻi.


Taimi meli: Iul-01-2022

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