Hiki ke hoʻokaʻawale ʻia ke kila kila i ke kila kila austenitic, ke kila kila ferritic, ke kila kila martensitic a me ke kila kila duplex e like me kona ʻano metallographic.
(1) Ke kila kila Austenitic
ʻO ke ʻano mahana o ka lumi o ke kila kila austenitic he austenite, i hana ʻia ma ka hoʻohui ʻana i ka nickel kūpono i ke kila kila chromium kiʻekiʻe.
Loaʻa i ke kila kila Austenitic ka ʻōnaehana austenite paʻa wale nō ke loaʻa iā Cr ma kahi o 18%, Ni 8% a 25%, a ʻo C ma kahi o 0.1%. Hoʻokumu ʻia ke kila kila Austenitic ma ka metala hao Cr18Ni9. Me nā hoʻohana like ʻole, ua hoʻomohala ʻia ʻeono mau moʻo o nā kila kila austenitic.
Nā papa maʻamau o ke kila kila austenitic:
(1) 1Cr17Mn6Ni15N; (2) 1Cr18Mn8Ni5N; (3) 1Cr18Ni9; (4) 1Cr18Ni9Si3; (5) 06Cr19Ni10; (6) 00Cr19Ni10; (7) 0Cr19Ni9N; (8) 0Cr19Ni10NbN; (9) 00Cr18Ni10N; (10) 1Cr18Ni12; (11) 0Cr23Ni13; (12) 0Cr25Ni20; (13) 0Cr17Ni12Mo2; (14) 00Cr17Ni14Mo2; (15) 0Cr17Ni12Mo2N; (16) 00Cr17Ni13Mo2N; (17) 1Cr18Ni12Mo2Ti; (18) 0Cr; 1Cr18Ni12Mo3Ti; (20) 0Cr18Ni12Mo3Ti; (21) 0Cr18Ni12Mo2Cu2; (22) 00Cr18Ni14Mo2Cu2; (23) 0Cr19Ni13Mo3; (24) 00Cr19Ni13Mo3; (25) 0Cr18Ni16Mo5; (26) 1Cr18Ni9Ti; (27) (29) 0Cr18Ni; 0Cr18Ni13Si4;
Loaʻa i ke kila kila Austenitic ka nui o Ni a me Cr, e hana ana i ke kila austenite i ka mahana o ka lumi. Loaʻa iā ia ka plasticity maikaʻi, ka paʻakikī, ka weldability, ke kūpaʻa i ka corrosion a me nā waiwai magnetic non-magnetic a nāwaliwali paha. Loaʻa iā ia ke kūpaʻa maikaʻi i ka corrosion i ka oxidizing a me ka hōʻemi ʻana i nā media. Hoʻohana ʻia ia e hana i nā lako hana kūpaʻa waikawa, e like me nā ipu kūpaʻa corrosion a me ka uhi lako a me ka halihali. Hiki ke hoʻohana ʻia nā paipu, nā ʻāpana lako kūpaʻa waikawa nitric, a me nā mea ʻē aʻe, ma ke ʻano he mea nui o nā mea hoʻonaninani. Hoʻohana pinepine ke kila kila Austenitic i ka mālama ʻana i ka hopena, ʻo ia hoʻi, ua hoʻomehana ʻia ke kila i 1050 a 1150°C, a laila hoʻomaʻalili ʻia i ka wai a i ʻole ka ea e loaʻa ai kahi ʻano austenite hoʻokahi-phase.
(2) kila kila ferritic
Nā papa i hoʻohana pinepine ʻia o ke kila kila ferritic: (1) 1Cr17; (2) 00Cr30Mo2; (3) 00Cr17; (4) 00Cr17; (5) 1Cr17Mo; (6) 00Cr27Mo;
ʻO ke kila kila Ferritic he kila kila kila nona ke ʻano he ferrite nui i ka mahana o ka lumi. ʻO ka nui o ka Chromium he 11%-30%, ʻo kona kūpaʻa i ka corrosion, ka paʻakikī a me ka weldability e hoʻonui me ka hoʻonui ʻia o ka nui o ka chromium, ʻoi aku ka maikaʻi o ke kūpaʻa ʻana i ka corrosion stress chloride ma mua o nā ʻano kila kila ʻē aʻe, ʻaʻole i loaʻa i kēia ʻano kila ka nickel, i kekahi manawa aia pū kekahi liʻiliʻi o Mo, Ti, Nb a me nā mea ʻē aʻe. Loaʻa i kēia ʻano kila nā ʻano o ka conductivity thermal nui, ka coefficient hoʻonui liʻiliʻi, ke kūpaʻa oxidation maikaʻi, a me ke kūpaʻa corrosion stress maikaʻi loa. Hoʻohana nui ʻia ia e hana i ke kūpaʻa lewa, ka mahu wai, ka wai a me nā waikawa oxidizing. Nā ʻāpana i pala. Eia nō naʻe, ʻaʻole maikaʻi nā waiwai mechanical a me ka hana hana, a hoʻohana nui ʻia lākou i nā ʻano kūpaʻa acid me ka liʻiliʻi o ke kaumaha a me nā kila anti-oxidation. Hiki iā ia ke hana i nā ʻāpana e hana ana i nā mahana kiʻekiʻe, e like me nā ʻāpana turbine kinoea.
Ka manawa hoʻouna: Nov-11-2021