Effects of Intermediate Annealing Temperature and Final Reduction Ratio on the Recrystallization Structure of a Twin-Roll Cast and Cold Rolled Al Alloy after Brazing Heat Treatment

Title
Effects of Intermediate Annealing Temperature and Final Reduction Ratio on the Recrystallization Structure of a Twin-Roll Cast and Cold Rolled Al Alloy after Brazing Heat Treatment
Author(s)
권해욱김윤성박종우[박종우]김동진[김동진]
Keywords
GRAIN-SIZE; ALUMINUM; BEHAVIOR; SHEETS
Issue Date
201304
Publisher
KOREAN INST METALS MATERIALS
Citation
KOREAN JOURNAL OF METALS AND MATERIALS, v.51, no.4, pp.291 - 298
Abstract
This study investigated the effects of intermediate annealing temperature and final reduction ratio on the recrystallization structure of a twin-roll continuous cast and cold rolled Al alloy after brazing heat treatment. The grain structure after brazing heat treatment of the intermediate-annealed specimen at a lower temperature of 410 degrees C was coarser than that at a higher temperature of 470 degrees C. The dispersoids of nanometer size particles, which had been absent in the as-cast specimen, were precipitated during the intermediate annealing and significantly influenced the recrystallized grain structure during brazing heat treatment. Even though the grain size of the specimen rolled with a lower final reduction ratio of 30% was a little finer than that with a higher one of 40% after the intermediate annealing, the former was much coarser than the latter after the brazing heat treatment.
URI
http://hdl.handle.net/YU.REPOSITORY/26038http://dx.doi.org/10.3365/KJMM.2013.51.4.291
ISSN
1738-8228
Appears in Collections:
공과대학 > 신소재공학부 > Articles
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