Ingaruka zo kuvura cryogenic kuri microstructure ya karbide ya sima

Inzira zitandukanye za cryogenic zitera impinduka mumiterere yaCarbide, kandi impinduka mumitungo zifitanye isano rya hafi nihindagurika rya microstructure.Niyo mpamvu, birakenewe kurushaho gusesengura ingaruka zo kuvura cryogenic kuri microstructure ya karbide ya sima.

Microstructure isanzwe ya WC-Co ya sima ya karbide niyi ikurikira: icyiciro - WC (icyiciro gikomeye);icyiciro - Co (icyiciro cya binder);y icyiciro - (TaC, TiC, NbC, WC) iringaniye ya karubide ivanze;eta icyiciro-decarburized icyiciro (CoW, C, Co W. C).Gill n'abandi.yatanze igishushanyo mbonera cya a na β ibyiciro, nkuko bigaragara ku gishushanyo cya 6. Muri byo, α icyiciro-WC (icyiciro gikomeye) gifata igice kinini murisima ya karbidemuburyo bwa skeleton ikaze, mugihe β icyiciro-Co (icyiciro cya binder) gifitanye isano rya hafi na tungsten karbide (WC) nka gride.

Iyo karbide ya sima ikonje nyuma yo gucumura, kubera ko umubare munini wa W na C ushonga muri Co, icyiciro cy'ubushyuhe bwo hejuru α-Co mubushyuhe bwicyumba kiracyahari neza.Iyo ubushyuhe bukomeje kugabanuka, icyiciro cya martensitike gihinduka kuva kubice-bishingiye kuri cubic α-Co kugeza hafi-byuzuye-impande esheshatu ε-Co bibaho mugice cyo guhuza -Co.Birashobora kugaragara ko iyo ubushyuhe buhindutse, habaho impinduka muri microstructure yaCarbide, itanga amahirwe yo kuvura cryogenic kugirango iteze imbere icyiciro cyaCarbide.Ubushakashatsi bwinshi bwibanze ku mpinduka muri microstructure yaCarbidembere na nyuma yo kuvura cryogenic no gukora ubushakashatsi kuri mikorosikopi yubwihindurize iyo imiterere ya macroscopique ihindutse.