Me yasa zoben karfen carbon ke kasawa ta 'Brittle Fracture' a cikin yanayin sanyi-yanayin karkashin teku?

Karfe na Carbon (SAE 1070) yana fuskantar 'Ductile-to-Brittle Transition' (DBT) a ƙananan zafin jiki. Ƙarƙashin zafin jiki na canji, ƙarfin tasirin kayan yana raguwa sosai, kuma ba zai iya ƙara lalacewa ta filastik don rage damuwa. A cikin aikace-aikacen mai da iskar gas na cikin teku (wanda zai iya kaiwa kusa-daskarewa ko ma ƙasa da ƙasa a yanayin Arctic), duk wani nauyin girgiza zai iya haifar da zobe ya farfashe. Injiniyoyi suna rage wannan ta amfani da austenitic bakin karafa (jeri 300) ko nickel gami (Inconel), waɗanda ba sa nuna DBT kuma suna kasancewa masu tauri da ductile har ma a yanayin zafi na cryogenic.