발간논문

Home > KJMM 논문 > 발간논문

Vol.30, No.5, 524 ~ 532, 1992
Title
Microscopic Observation of Adiabatic Shear Band in Al - SiCw Composites
이성학Sung Hak Lee, 김기종Ki Jong Kim, 조경목Kyung Mok Cho, 최원봉Won Bong Choi, 김한식Han Sik Kim
Abstract
The objective of the present study is to investigate the adiabatic shear band of 2124-T6 Al-SiCw composites. The composites were highly deformed at high strain rate by ballistic impact and the adiabatic shear bands revealed white-etching bands with evidence of highly deformed flow on the edges of the cracks near the impacted region. Reaction products, microvoids and whisker rearrangement were observed within the shear band presumably due to the local temperature rise occurring during dynamic deformation. The bands had trends to change their propagation path along the extrusion direction because SiC whiskers effectively prevented the formation of adiabatic shear band by increasing the strength level and by blocking the propagation of the shear band. Ballistic performance of the Al-SiCw composites was also analyzed by comparing the shear band behavior with dynamic fracture toughness.
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.