Insimbi Engagqwali Ekhethekile
0102030405
UKWAKHIWA KWAKHEMICAL
ISIKHALA | % | C | Futhi | UMn | P | S | Ku | Cr | Nge | Nb | Al |
17-4PH | MIN | - | - | - | - | - | 3.0 | 15.0 | 3.0 | 0.15 | - |
MAX | 0.07 | 1.0 | 1.0 | 0.04 | 0.03 | 5.0 | 17.5 | 5.0 | 0.45 | - | |
17-7PH | MIN | - | - | - | - | - | 6.5 | 16.0 | - | - | 0.75 |
MAX | 0.09 | 1.0 | 1.0 | 0.04 | 0.03 | 7.75 | 18.0 | - | - | 1.5 |
Izakhiwo Zomzimba
Imodeli | 17-4PH | 17-7PH |
Ukuminyana | 7.85g/cm3 | 7.85g/cm3 |
Iphoyinti lokuncibilika | 1404-1440 ℃ | 1404-1440 ℃ |
Isici somkhiqizo
I-17-4PH iyimvula ye-chromium-nickel-copper eqinisa insimbi engagqwali ye-martensitic. Leli banga lensimbi engagqwali libonakala ngamandla aphezulu, ubulukhuni nokumelana nokugqwala. Izakhiwo zemishini zithuthukiswa ukushisa Ukwelashwa namandla okucindezela afika ku-1100-1300 MPa (160-190 ksi) angafinyelelwa. Leli banga alikwazi ukusetshenziswa emazingeni okushisa angaphezu kuka-300°C (572°F) noma emazingeni okushisa aphansi kakhulu. Inokumelana nokugqwala okuhle emoyeni kanye ne-dilute acid noma usawoti, futhi ukumelana kwayo nokugqwala kuqhathaniswa nalokho kwe-304.
I-17-7PH i-austenitic-martensitic precipitation eqinisa insimbi engagqwali ethuthukiswe ngesisekelo se-18-8CrNi, eyaziwa nangokuthi i-controlled phase change steel stainless steel. I-17-7PH insimbi engagqwali iyinhlangano engazinzile ye-austenitic ngemuva kwesixazululo esiqinile Ukwelashwa, ngokuqina okuhle kwepulasitiki nokuqina, ngemuva kokushisa, ukuze imvula ye-austenite ye-carbides ngemva koshintsho ekubunjweni, bese ngenqubo yokuguqulwa kwe-martensitic, iningi lenhlangano liguqulwa libe yinqubo ephansi ye-carbon tempering enokuqina okuhle. Ngemuva kokushisa, ukwakheka kwe-austenite precipitation carbide kuyashintsha, bese kuthi ngenqubo yokuguqulwa kwe-martensitic, iningi lenhlangano liguqulwa libe yi-carbon tempered martensite ephansi enokuqina okuhle, futhi inezakhiwo ezinhle zemishini ekushiseni okuphakathi. I-17-7PH ukumelana nokugqwala kungcono kunensimbi engagqwali ye-martensitic ejwayelekile.
