Answer
Damuwa lalata Cracking (SCC) wata hanya ce ta gazawa da ke faruwa a lokacin da abu mai saukin kamuwa (kamar bakin karfe mai ƙarfi) ya kasance cikin damuwa duka biyu da kuma yanayi mai lalacewa (kamar ions chloride). A cikin zoben riƙewa na karkace, 'dantsin ƙwanƙwasa' shine ragowar damuwa daga murɗa tare da damuwa daga sanyawa a cikin tsagi. Idan an yi amfani da zobe na 17-7PH a cikin yanayin ruwa ba tare da wucewa mai kyau ko sutura ba, ions chloride zai iya shiga cikin Layer oxide kuma ya fara fashewar ƙananan ƙwayoyin cuta. Wadannan tsaga suna yaduwa da sauri a ƙarƙashin tashin hankali na ciki, wanda ke haifar da gazawar zobe na kwatsam. Binciken saman karaya a ƙarƙashin na'urar duba microscope (SEM) zai nuna 'reshe' ɓarna na intergranular, waɗanda halayen SCC ne. Ragewa ya haɗa da amfani da A286 ko Inconel alloys waɗanda suka fi juriya ga SCC da ke haifar da chloride.
