Central Technological Library of the University of Ljubljana (CTK)
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The influence of processing technology on corrosion of high-strength Al-alloysVehovar, Leopold ; Smolej, Anton, 1941-Raziskovali smo novo tehnologijo predelave in toplotne obdelave različnih zlitin Al visoke trdote (št. 2024, 2030 in 7075, v primerjavi z ANSi) s premenjeno metodo indirektnega stiskanja. V zvezi s ... to novo tehnologijo, katera ima velik vpliv na mikrostrukturo zlitine, se postavlja vprašanje, v kolikšni meri to vpliva na korozijske lastnosti. Narejene so številne primerjave korozijskih lastnosti materialov, kateri so izdelani z zamenjavo novih, odnosno tradicionalnih tehnologij. Rezultati raziskav, izvedenih na osnovi zgoraj imenovanih zlitin so pokazali, da se odpornost na korozijo teh materialov ne razlikuje v veliki meri, čeprav so izdelani z različnimi tehnologijami in nimajo enake mikrostrukture. Meritve potencialne trdote raztopin so pokazale različne komponente mikrostrukture, katere se razlikujejo v obliki različnih faz anodnih ali katodnih lastnosti, ne kažejo pa velikih razlik v potencialu. Zaradi tega je korozijska obremenitev majhna, še posebno v manj agresivnih medijih, ali pa celo prihaja do pasivacije. Pri zlitinah visoke trdote, katere so pogosto izpostavljene pokanju zaradi korozivnega napenjanja je uvedena metoda anodne polarizacije vzorcev pod pritiskom v 34,5 % raztopini NaCl, z 72-urnim trajanjem polarizacije. Visoka odpornost proti tej vrsti razpok vsled napenjanja je dokazana z raziskavami mehanskih lastnosti in žilavosti, kot tudi s fraktografsko anlizo površine pri vzorcih, ki smo jih raziskali z anodno polarizacijo in kateri so pripravljeni z zamenjavo obeh tehnologij.Source: Metalurgija = Metallurgy. - ISSN 0543-5846 (Vol. 36, no. 3, srpanj/rujan (July/September) 1997, str. 149-154)Type of material - article, component partPublish date - 1997Language - englishCOBISS.SI-ID - 18014469
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source: Metalurgija = Metallurgy. - ISSN 0543-5846 (Vol. 36, no. 3, srpanj/rujan (July/September) 1997, str. 149-154)
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Smolej, Anton, 1941- | 00735 |
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