Hordhaca moodalka

Kuleylinta kicinta iyo daminta kulaylka ee tuubooyinka birta ah waa hab daaweyn kulaylka degdeg ah. Marka la barbardhigo daaweynta kulaylka kulaylka ee caadiga ah, waxay leedahay faa'iidooyin badan: qaab-dhismeedka birta ah wuxuu leeyahay miro aad u fiican; kulaylinta degdega ah ee heerkulka austenitic ka hor inta aan la damin waxay samaysaa qaab-dhismeed martensite aad u fiican, inta lagu jiro daminta, qaab-dhismeed ferrite-pearlite ah oo jilicsan ayaa la sameeyaa. Sababtoo ah waqtiga gaaban ee daminta kululaynta kicinta, walxaha yaryar ee carbide ayaa soo daadanaya oo si siman ugu baahsan shaxda martensite ee jilicsan. Qaab-dhismeedkan yar wuxuu si gaar ah faa'iido ugu leeyahay dahaarka u adkaysta daxalka.