Vpliv načina ohlajanja zvarnega spoja po varjenju na mehanske lastnosti jekla z oznako P91 : magistrsko delo
Weiss, Andrej
Jekla za komponente, ki jih uporabljamo v termoelektrarnah so podvržena povišani temperaturi in tlaku. Zato od njih pričakujemo, da prenašajo te ekstremne pogoje in so odporna proti lezenju. Dobro ...odpornost proti lezenju imajo jekla z dodatkom kroma od 8 do 12 % in z dodatki legirnih elementov, kot so: mangan, molibden, nikelj, vanadij in niobij. Odpornost proti lezenju je odvisna od velikosti in porazdelitve karbidov in nitridov v mikrostrukturi po toplotni obdelavi. Zavarili smo vzorce pri različnih temperaturah predgrevanja in medvarkovnih temperaturah, ki sta bili enaki. Po varjenju smo določene vzorce toplotno obdelali, na določenih pa tega nismo izvedli. Namen magistrske naloge je bil raziskati vpliv temperature predgrevanja in medvarkovne temperature v zvarnem spoju. Osnovni material, toplotno vplivano področje in zvar, smo preiskali z neporušnimi preiskavami, mehanskimi preiskavami, vrstično elektronsko mikroskopijo in energijsko disperzijsko spektroskopijo. Iz navedenih preiskav smo podali zaključke o temperaturi predgretja in medvarkovni temperaturi, ter naredili analizo zvarnega spoja.
Type of material - master's thesis
; adult, serious
Publication and manufacture - Ljubljana : [A. Weiss], 2016
M WEISS A. Vpliv IN: 00059673
M WEISS A. Vpliv IN: 00059673
available - reading room
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