Korean Journal of Materials Research, Vol.17, No.7, 361-365, July, 2007
ARB가공된 인탈산동의 어닐링에 따른 미세조직 및 기계적 특성 변화
Change in Microstructure and Mechanical Properties of Deoxidized Low-Phosphorous Copper Processed by Accumulative Roll-Bonding with Annealing
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A deoxidized low-phosphorous copper processed by eight cycles of accumulative roll-bonding (ARB) was annealed at various temperatures ranging from 100 to . The annealed copper was characterized by transmission electron microscopy (TEM) and tensile & hardness test. TEM observation revealed that the ultrafine grains developed by the ARB still remained up to , however above they were replaced by equiaxed and coarse grains due to an occurrence of the static recrystallization. The hardness of the copper decreased slightly with the annealing temperature up to , however they dropped largely above . Annealing characteristics of the copper were compared with those of an oxygen free copper processed by ARB and subsequently annealed.
Keywords:accumulative roll-bonding;annealing;deoxidized low-phosphorous copper;transmission electron microscopy;mechanical property
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