발간논문

Home > KJMM 논문 > 발간논문

Vol.36, No.5, 721 ~ 727, 1998
Title
Experimental Approaches for Appearance of Deformation Twinning in Ti3Al Alloys
이종욱 , 화전수치 Jong Wook Lee , Shuji Hanada
Abstract
Experimental approaches to a mechanism of deformation twinning in Ti₃Al alloys of the hexagonally ordered DO_(19) structure deformed in compression in the temperature range of 973K to 1373K and room temperature are examined focusing on relative intensity (long range order degree), non-a dislocation, the size of APD and the width of APB. The relative intensity ratio(I_(○)/I_(○)) measured by X-ray diffraction decreases with increasing temperature in the range of 973K to 1373K, indicating that the incidence of deformation twinning results from the decrease of long-range order degree. Moreover, non-c dislocations are visible in Ti-34㏖% Al alloy deformed at room temperature after water quenched from 1273K. The width of APBs in Ti-34mol% Al alloy compressed at 1273K is wider than that in Ti-34㏖% Al alloy compressed at room temperature. The size of APD in Ti-34㏖% Al alloy after annealed at 1273K is much smaller than those in Ti-30㏖% Al and Ti-25㏖% Al allovs.
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.