Ukushisa kwe-ZG40Cr28Ni48W5Si2-Ukusakaza Okunephrofayela Yensimbi

I-ZG40Cr28Ni48W5Si2 iyi-high-chromium-nickel{7}}i-tungsten-yokushisa kwe-silicon-insimbi eqinile ye-alloy cast. Okuqukethwe kwayo okuphezulu kwe-chromium kwakha ifilimu ye-oxide evikelayo yokumelana nokugqwala. Okuqukethwe kwe-nickel ephezulu kuqinisekisa ukuqina okuphezulu{12}}kwezinga lokushisa kanye nokumelana nokukhathala okushisayo. Izengezo ze-tungsten ne-silicon zithuthukisa amandla e-creep ngokuqiniswa kwesisombululo esiqinile.

Lesi sici sinikeza uketshezi oluhle lokusakaza izimo eziyinkimbinkimbi ngokunembile. Ikhiqiza ukulingisa okunephrofayili okuzinzile okunamakhontolo acacile.

Ama-castings agcina amandla aphezulu kanye nokuzinza kwe-microstructural ekushiseni okukhulu. Asebenza ngokuthembekile kumaroli wesithando somlilo, amashubhu akhazimulayo, nezinto ezilungiswayo.

Lezi zingxenye zimelana nezingcindezi eziyinkimbinkimbi ze-thermomechanical ngaphandle kokukhubazeka noma ukuqhekeka. Baphinde bamelane ne-surface oxidation kanye ne-spalling ngokuphumelelayo.

Ukusebenzisa lesi sisetshenziswa kuhlanganisa ukuqina okuhle kakhulu nokuqina okuphezulu{0}}kwezinga lokushisa eliphezulu. Ivumela izingxenye eziyinkimbinkimbi{2}}ezihlala isikhathi eside ezinsizeni ezishisayo.

Lokhu kunciphisa isikhathi sokulungisa futhi kuthuthukisa ukusebenza kahle kwemishini yonke. Umphumela uwukusebenza okuthembekile futhi ukonga kakhulu{1}}kwezinga lokushisa eliphezulu.

Okukhethekile{0}}I-Temperature Oxidation kanye Nokumelana Nokugqwala

 

Okuqukethwe kwe-chromium ephezulu (cishe ama-28%) kukhuthaza ukwakheka kongqimba oluminyene lwe-chromium oxide ngaphezulu. Lesi sendlalelo sisebenza njengesithiyo esisebenzayo ngokumelene nomoya-mpilo nemidiya ebolayo, siqinisekisa impilo yesevisi ende{2}}ezindaweni eziphakeme zezinga lezinga lokushisa ne-oxidizing ne-corrod atmosphere.

Ukumelana Nokukhathala Okuvelele Okushisayo

 

Okuqukethwe kwe-nickel ephezulu kakhulu (cishe u-48%) kuzinzisa ukwakheka kwe-austenitic matrix. Lesi sakhiwo sinikeza amandla aphezulu kanye nokuqina emazingeni okushisa aphakeme, okwenza ukulingisa kukwazi ukumelana nokushisisa okuphindaphindiwe kanye nemijikelezo yokupholisa ngaphandle kokuqhekeka noma ukwehluleka ngenxa yengcindezi yokushisa.

Ukusatshalaliswa Okuhle Kakhulu kanye Nokwakheka

 

Ukwakheka kwengxubevange kuqinisekisa izici zokugeleza kwensimbi encibilikisiwe ezivumayo, okuvumela ukugcwaliswa okuphelele kwemigodi yesikhunta eyinkimbinkimbi. Lokhu kubalulekile ukuze kukhiqizwe ukulingisa okunembayo, okucaciswe ngokucijile, okuqinisekisa ukwenzeka kwemiklamo eyinkimbinkimbi.

Amandla Okushisa Aphakeme Kakhulu{0}Nokumelana Ne-Creep

 

I-Tungsten ne-silicon ziqinisa kakhulu i-matrix ye-alloy ngokuqiniswa kwesisombululo esiqinile. Lokhu kuthuthukisa kakhulu ukumelana kokunyakaza kokusebenza ngaphansi-kwezinga lokushisa eliphezulu{2}}elide{2}}lokuvumela ukusakaza kugcine ukuqina kobukhulu futhi kumelane nokuguquka kumazinga okushisa aphakeme.

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