Jang, HS Kang, CW Kim, YD Hong, KT Kim, SJ 2024-01-21T07:08:58Z 2024-01-21T07:08:58Z 2021-09-02 2004-05 0966-9795 https://pubs.kist.re.kr/handle/201004/137645 Effects of Mn addition on microstructure, phase stability and mechanical properties of (Al + x at.%Mn)(3)Ti intermetallic compounds fabricated by mechanical alloying and spark plasma sintering were investigated. As-milled ternary powders consist of homogeneous distribution of fine crystallites in amorphous matrix. (Al + 0.08 Mn)(3)Ti showed the most stable thermal stability with average grain sizes of less than 60 and 100 nm after heat treatments at 900 and 1100 degreesC, respectively. The reduction of grain size down to nano-scale was not sufficent enough to increase the fracture toughness of trialuminide. Fracture toughness was also remained relatively constant and showed no significant dependence oil Mn concentration. Microhardness was generally increased with increasing Mn,In concentration and decreased with increasing heat treatment temperatures due to the grain size effects. The formation of L1(2), phase played a major role in increased fracture toughness and (Al + 0.08 Mn)(3)Ti showed the highest fracture toughness of 4.12 MPa m(1 2) with only L1(2) phase formation. (C) 2004 Elsevier Ltd. All rights reserved. English ELSEVIER SCI LTD Effects of Mn addition on microstructure and mechanical properties of (Al+x at.%Mn)(3)Ti intermetallic compounds prepared by mechanical alloying and spark plasma sintering Article 10.1016/j.intermet.2003.12.010 1 INTERMETALLICS, v.12, no.5, pp.477 - 485 INTERMETALLICS 12 5 477 485 scie scopus 000221009600003 2-s2.0-1842581369 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article trialuminide nanostructured intermetallics (including preparation methods) mechaincal properties at high temperatures thermal stability sintering