발간논문

Home > KJMM 논문 > 발간논문

Vol.38, No.12, 1600 ~ 1606, 2000
Title
Grain Refinement and Mechanical Properties of Commercial Aluminum Alloy by Equal - Channel Angular Pressing
진선화Sun Hwa Jin,김형욱Hyoung Wook Kim,강석봉Suk Bong Kang
Abstract
Using equal-channel angular pressing(ECAP) at room temperature, the grain size of 1080 Al(99.8% pure) was refined from ∼107 ㎛ to the submicrometer level. The effect of grain size refinement on the mechanical properties and recrystallization behavior was evaluated by the tensile test, micro-hardness test and microstructural observations. The grain size was reduced to 0.9 ㎛ after a single pass and the strength and the Vickers hardness was increased significantly. But the microstructures after a single pass were consisted of bands of elongated subgrains divided by low angle boundaries. With the pressing numbers, the microstructures were evolved into the grain structure with an equiaxed grains divided by high angle boundaries. As the strains induced into the samples were increased, the grain size recrystallized after annealing treatment became more refined.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.