Deformation kulimbitsa mkulu aloyi chitoliro

Wapamwambaalloy pipekulimbitsa ma deformation ndiko kugwiritsa ntchito njira zolimbikitsira zitsulo.Kumatchedwanso kuuma kapena kulimbitsa mphamvu.Mphamvu ya zinthu pa macro (kapena yonse) kuthekera kokana mapindikidwe (kapena kupsinjika kwakuyenda).Kuuma ndi kuthekera kwazinthu kukana kupunduka kwa pulasitiki komweko (kaya kuuma, kulimba kwa Vickers, kulimba kwa Rockwell kapena Brinell).Onsewa amakhala ndi mgwirizano wofanana nthawi zambiri.Kulimba kwazinthu, kukana kukana kwa mapindikidwe apulasitiki, kumapangitsanso kuuma kwamtengo.Mosiyana ndi zimenezo, kuuma kwa zinthuzo kukukwera, zinthuzo zikhoza kukhala chifukwa cha kuwonjezeka kwa brittleness, mphamvu zake sizimasonyezedwa mokwanira mu chiwerengero cha mphamvu zotere sichili chapamwamba.

Pakuti yaitali pansi mankhwala kutentha, ndi ntchito zipangizo mu kutentha bwino pansi pa recrystallization kutentha kwa aloyi chubu mkulu-anzanu zitsulo chitoliro zakuthupi, nthawi zambiri ntchito ozizira (ozizira mapindikidwe) zikutanthauza kuti kupyolera mapindikidwe kulimbikitsa mphamvu.Choncho, mapindikidwe kulimbikitsa akamanena recrystallization kutentha zinthu zotsatirazi ozizira mapindikidwe, ndi mlingo wa mapindikidwe (kupsyinjika) ndi kuchuluka, chifukwa mkulu kachulukidwe wa dislocations (crystal zilema), ndi apamwamba dislocation kachulukidwe mu kristalo, ndi wamkulu kuchuluka kwa kukulitsa, kumapangitsanso kupsinjika kwakuyenda.Pambuyo mapindikidwe otaya nkhawa machubu zitsulo sayenera kukhala ofanana pamaso otaya nkhawa mapindikidwe kulimbitsa mapindikidwe kuphatikiza otaya otaya nkhawa.Kugwiritsa ntchito mapindikidwe kulimbikitsa kukwaniritsa mkulu mphamvu mankhwala zitsulo, ndi mmene mkulu-mpweya zitsulo ozizira kukokedwa zitsulo waya ndi otsika mpweya otsika aloyi duplex zitsulo ozizira kukokedwa zitsulo waya.

Ndi kuchuluka kwa mapindikidwe kumawonjezeka, mphamvu ya zinthu ndi kuuma apamwamba ndi apamwamba, koma ductility ake ndi kulimba nthawi zambiri kutsika ndi kutsika, mochulukira Chimaona, amene ayenera kuchitapo kanthu mwamphamvu kusintha zinthu.Zamkati zomwe zimapangidwira mu kusintha kwa gawo la martensitic panthawi yoziziritsa kuti ziwumitsidwe, thunthu lake lakuthupi, limakhalanso la kulimbitsa mapindikidwe, koma nthawi ino osati kuchokera ku mapindikidwe akunja, koma kuchokera ku kusintha kwa martensitic kwa kristalo wokwera-kachulukidwe kakang'ono komwe kamameta ubweya wopangidwa molakwika. .


Nthawi yotumiza: Oct-15-2019