umbhobho steel stainless ngoku kusetyenziswa ngokubanzi ngakumbi nangakumbi, ngenxa yokuxhathisa yayo elungileyo umhlwa iye yadlala indima ebalulekileyo kulwakhiwo lobunjineli, kwinkqubo yokuvelisa kufuneka isisombululo esiluqilima ukusetyenzwa ityhubhu steel stainless, eyona njongo iphambili kukufumana martensite ezithile ukwandisa ubulukhuni imveliso, makhe sijonge isisombululo sokulungiswa kwetyhubhu yensimbi engenasici:
(1) Emva konyango lwesisombululo, ifudunyezwa ukuya ku (760±15) ℃, kwaye umxholo wekhabhoni kunye nezinto ezixutyiweyo kwi-austenitic 904L ityhubhu yensimbi engenasici iyancitshiswa ngenxa yemvula ye-Cr23C6 carbide ukusuka kwi-austenitic 904L ityhubhu yensimbi engenasici kwi-90min ℃ iphakanyiswe ukuya kwindawo epholileyo ye-M7, ukuze ifumane indawo ye-M7 martensite + αferrite + intsalela yesakhiwo austenitic. I-austenite eshiyekileyo iboliswe kukuguga kwi-510 ℃.
(2) emva kokulungiswa kweqondo lokushisa eliphezulu kunye nonyango lwe-cryogenic, isisombululo saqala ukufudumeza kwi-950 ℃ kwaye sibanjwe i-90min. Ngenxa yokwanda kwe-Ms point, inani elincinci le-martensite lingafumaneka emva kokupholisa kwiqondo lokushisa. Emva koko, umlinganiselo othile we-martensite unokufumaneka ngo--70 ℃ unyango olubandayo kwaye ubambe i-8h.
3 Ubungakanani be-martensite eyenziwe yi-904L ityhubhu engenamthungo ngexesha lokuguqulwa okubandayo lihambelana nesixa se-deformation kunye nokubunjwa kwe-904L ityhubhu yensimbi engenasici.
Ezi ndlela zintathu zingasentla ziqhele ukusetyenziswa stainless steel ityhubhu isisombululo indlela unyango ithemba ukuzisa uncedo kuwe.
Ixesha lokuposa: Jan-29-2023