Matla a matla a alloy alloy pipe deformation a sebelisa mokhoa oa deformation oa ho matlafatsa tšepe. E boetse e tsejoa e le ho thatafatsa kapa ho thatafatsa mosebetsi. Matla a thepa ho macro (kapa ka kakaretso) bokhoni ba ho hanela deformation (kapa khatello ea maikutlo). Ho thatafala ke bokhoni ba thepa ea ho hanela deformation ea polasetiki sebakeng sa lehae (ebang ke micro-hardness, Vickers hardness, Rockwell hardness kapa Brinell hardness). Ka bobeli li na le likamano tse tšoanang maemong a mangata. Matla a thepa, ho hanyetsa ho hoholo hoa deformation ea polasetiki, ho phahamisa boleng ba boima. Ka lehlakoreng le leng, ho phahama ho thata ha thepa, thepa e ka 'na ea e-ba ka lebaka la ho eketseha ha brittleness, matla a eona ha a bonahale ka ho feletseng ka boleng bo joalo ba index ha bo phahame.

Bakeng sa nako e telele tlas'a kalafo mocheso, 'me tšebeliso ea lintho tse bonahalang mocheso hantle ka tlaase ho mocheso recrystallization ea phahameng-khatello motsoako phala tšepe phala lintho tse bonahalang (tse kang tlaase-carbon low-alloy tšepe), hangata sebelisa batang (bata deformation) kahoo hore ka mokhoa oa deformation ho matlafatsa ho ntlafatsa matla. Ka hona, motsoako o matlafatsang oa deformation o mocheso oa recrystallization oa thepa ka mokhoa o batang o latelang, ka tekanyo ea deformation (mathata) e ntse e eketseha, e leng se fellang ka ho fokotseha ho hoholo ha li-dislocations (litšitiso tsa kristale), e leng se phahameng sa ho senyeha ha kristale. , E kholoanyane tekanyo ea ntlafatso, e leng khatello e phahameng ea phallo. Ka mor'a deformation phallo khatello ea tšepe ha ea lokela ho lekana pele deformation phallo khatello ea kelello hammoho le incremental deformation matlafatsa phallo khatello ea kelello. Tšebeliso ea matla a ho matlafatsa ho fihlela lihlahisoa tsa tšepe tse matla, tse tloaelehileng ke terata ea tšepe e huloang ka k'habone e batang le terata e tlase ea carbon low-alloy duplex steel e huloang ke serame.

Ka ho eketseha ha tekanyo ea deformation, matla a lintho tse bonahalang le ho thatafala phahameng le ho feta, empa ductility lona le toughness ba atisa ho fumana tlaase le ka tlaase ho, le ho feta brittle, e leng hloka ka thata ho nka mehato e loketseng ho ntlafatsa boemo boo. E ka hare e susumetsoang ke karolo ea phetoho ea martensitic mohato o pholileng bakeng sa ho thatafala, mohloli oa eona oa 'mele, hape ke oa ho matlafatsa deformation, empa lekhetlong lena eseng ho tloha ka ntle ho deformation, empa mokhoa oa ho fetoha ha martensitic ho tloha kristale High-density place ka boeona ho kuta e hlahisoang ke phoso.