O le a le 'ese'esega i le va o le 17-4PH ma isi uamea fa'ama'a'a (PH)?

O le a le 'ese'esega i le va o le 17-4PH ma isi uamea fa'ama'a'a (PH)?

Folasaga

u'amea fa'ama'a'a-fa'a'a'a'a (PH uamea) o se vasega o u'amea e fa'a'ele'elea e tu'ufa'atasia le malosi o u'amea martensitic ma austenitic fa'atasi ai ma le lelei tele o le fa'a'ele'ele. I totonu oi latou,17-4PH uamea uameae fa'apea e sili ona fa'aoga lautele ona o ona uiga fa'ainisinia fa'apitoa ma le faigofie o le fa'againa. Ae fa'afefea ona fa'atusatusa i isi togi PH pei ole 15-5PH, 13-8Mo, 17-7PH, ma le Custom 465? O lenei tusiga e loloto loloto i le eseesega i le tuufaatasiga, togafitiga vevela, mea faʻainisinia, teteʻe o le pala, ma faʻaoga.

Va'aiga lautele o 'u'amea fa'ama'a'a

O u'amea fa'ama'a'a e maua ai le malosi mai le fa'atupuina o fa'aputuga lelei i totonu o le fa'ameamea u'amea i taimi o togafitiga vevela tuai. Ua vaevaeina nei uamea i ni vaega autu se tolu:

1. Martensitic PH uamea(faataitaiga,17-4PH, 15-5PH)
2. Semi-austenitic PH uamea(faataitaiga, 17-7PH)
3. Austenitic PH uamea(faataitaiga, A286)

O vaega ta'itasi e ofoina atu se tu'ufa'atasiga tulaga ese o meatotino e fa'atatau i mana'oga fa'apitoa tau pisinisi.

17-4PH (UNS S17400): Le Alamanuia Tulaga

Tulaga:

• Kr: 15.0–17.5%
• Ni: 3.0–5.0%
• Ku: 3.0–5.0%
• Nb (Cb): 0.15–0.45%

Togafitiga vevela: Fofo-togafitia ma matua (e masani lava H900 i le H1150-M)

Meatotino Fa'ainisinia (H900):

• Malosi o le Toese: 1310 MPa
• Malosi o fua: 1170 MPa
• Fa'atele: 10%
• Malosi: ~44 HRC

Tulaga lelei:

• Malosi maualuga
• Fete'ena'i le pala
• Machinability lelei
• E mafai ona u'amea

Talosaga:

• Vaega o vaalele
• Reactors faaniukilia
• Valves, fa'amau, fa'amau

Faatusatusaga ma isi PH uamea uamea

15-5PH (UNS S15500)

Tulaga:

• E tutusa ma le 17-4PH, ae faʻatasi ai ma le faʻatonutonuina o mea leaga
• Kr: 14.0–15.5%
• Ni: 3.5–5.5%
• Ku: 2.5–4.5%

Eseesega Autu:

• Sili atu malō fela'ua'i ona o le fa'alelei microstructure
• Faʻaleleia mea faʻainisinia i vaega mafiafia

Fa'aoga Tulaga:

• Aerospace forgings
• Mea faigaluega e fa'agaioia vaila'au

13-8Mo (UNS S13800)

Tulaga:

• Kr: 12.25–13.25%
• Ni: 7.5–8.5%
• Mo: 2.0–2.5%

Eseesega Autu:

• Malosi maualuga ma le pala
• Malosi maualuga i vaega mafiafia fa'alava
• Fa'atonuga tu'ufa'atasiga mo le fa'aogaina o le vateatea

Fa'aoga Tulaga:

• Vaega o le vateatea fausaga
• Punavai maualuga

17-7PH (UNS S17700)

Tulaga:

• Kr: 16.0–18.0%
• Ni: 6.5–7.75%
• Al: 0.75–1.50%

Eseesega Autu:

• Semi-austenitic; e manaʻomia galuega malulu ma togafitiga vevela
• E sili atu le faʻaogaina ae faʻaitiitia le faʻafefeteina nai lo le 17-4PH

Fa'aoga Tulaga:

• Aerospace diaphragms
• Fa'aalo
• Punavai

Fa'asinomaga 465 (UNS S46500)

Tulaga:

• Kr: 11.0–13.0%
• Ni: 10.75–11.25%
• Ti: 1.5–2.0%
• Mo: 0.75–1.25%

Eseesega Autu:

• Malosi tele-maualuga (e oo atu i le 200 ksi tensile)
• Malosi gau gau
• Tau maualuga

Fa'aoga Tulaga:

• Meafaigaluega ta'oto
• Fa'amau va'alele
• Vaega o mea e fau ai

Faatusatusaga Togafitiga vevela

Fa'atusatusaga Tete'e a'e

• Sili:13-8Mo ma Aganuu 465
• Lelei:17-4PH ma le 15-5PH
• Fair:17-7PH

Fa'aaliga: E leai se mea e fetaui ma le fa'a'ele'ele o fa'ailoga austenitic atoatoa pei ole 316L.

Masini ma Weldability

Iloiloga o Tau

• E sili ona taugofie:17-4PH
• togi maualuga:13-8Mo ma Aganuu 465
• Paleni:15-5PH

Fa'atusa Fa'atatau

Aotelega

Fa'ai'uga

E ui o le 17-4PH e tumau pea le alu-i PH uamea u'amea mo le tele o fa'amoemoega lautele, o isi togi PH e iai tulaga lelei ma'oti e sili atu ona fetaui mo mana'oga fa'apitoa. O le malamalama i le eseesega i le va o nei u'amea e mafai ai e inisinia meafaitino ma tagata fa'atau ona faia ni fa'ai'uga fa'atatau e fa'atatau i le malosi, ma'a'a, tete'e a'e, ma le tau.