Official Answer
Answer
Don 300-jerin bakin karfe, ana amfani da maganin cryogenic (sanyi zuwa $-196 ° C $) don kammala canjin austenite da aka riƙe zuwa martensite. A cikin zoben karkace, wannan tsari yana ƙara ƙarfi da kwanciyar hankali. Don zoben da aka yi amfani da su a cikin bawul ɗin cryogenic (misali, Liquid Oxygen ko LNG), wannan jiyya yana tabbatar da cewa zoben ba ya jujjuya canjin lokaci a cikin sabis, wanda zai iya haifar da canjin ƙara da asarar 'ƙuƙwalwa' ko tashin hankali. Hakanan yana inganta juriyar lalacewa na gefuna na zobe, wanda ke da fa'ida a aikace-aikace inda zoben zai iya ganin ƙaramin axial oscillations.
