Studies on corrosion of aluminum alloy welds
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The corrosion tests of TIG-welds in 1080, 5052, 5083-O, H plates, 6061 and AlZnMg-T4, T6 plates were made for a period of one year in industrial and marine atmospheres and in industrial and sea waters.The results obtained were summarized as follows:(1) Many small pits were produced on the whole surface of all specimens corroded in industrial and marine atmospheres. There were no differences to be observed among the all kinds of materials.(2) In industrial and sea waters, 1080, 5052 and 5083 alloy welds had high corrosion resistivity, while 6061 and AlZnMg alloy welds were severely corroded in their heat-affected zones.(3) The decreases in tensile properties of welds by corrosion were negligibly small, except the AlZnMg alloys corroded in industrial water.(4) In industrial water, the solid solution zone of welded joints in AlZnMg-T6 specimens and all parts of T 4 specimens, except for weld metal, were severely corroded.(5) Intergranular corrosion was found in the fusion zone and solid solution zone of welds in heat-treating alloys such as 6061 and AlZnMg.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
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