발간논문

Home > KJMM 논문 > 발간논문

Vol.35, No.5, 550 ~ 558, 1997
Title
Variation in the Plastic Strain Ratio with Tensile Strain
정효태 , 이동녕 Hyo Tae Jeong , Dong Nyung Lee
Abstract
The relationship between tensile and width strains during tensile testing has been studied for 99.99% aluminium, 70 : 30 brass and IF steel sheets. The data have been analyzed based on the conventional R-value, the instantaneous R-value and a linear regression R-value. The instantaneous R-value was found to be the most suitable method for characterizing the variation of the R-value or the plastic strain ratio. The instantaneous R-values of the aluminium and IF steel sheets were approximately constant, exhibiting a discontinuous increase at a strain of 5 to 6 percent. The instantaeous R-value of 70 : 30 brass sheet decreased continously with tensile strain. This variation was attributed to the texture variation with tensile strain.
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.