Journal
MATERIALS & DESIGN
Volume 60, Issue -, Pages 363-367Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2014.03.048
Keywords
Microstructure; Chemical heterogeneity; Mechanical properties
Categories
Funding
- National Research Foundation of Korea (NRF) [2013R1A2A2A05006550, 2012K2A1A2032647]
- Technology R&D Program for Energy - Ministry of Trade, Industry and Energy (MOTIE), Korea [20112010300030]
- Priority Research Centers Program through the National Research Foundation of Korea (NRF) [2010-0020207]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20112010300030] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2013R1A2A2A05006550] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Chemical heterogeneity in Ti-Fe ultrafine eutectic structure has been introduced by addition of Bi without structural heterogeneities such as length-scale, volume fraction and morphology of lamellar and colony structures. The detailed microstructural investigation clearly reveals that the Bi was highly saturated at the colony boundary of the ultrafine eutectic alloys. The chemical heterogeneity introduced by the additional Bi in the present investigation effectively dissipates the localization of the stress thus improving the plasticity up to 8.5% without compromising the strength of 2100 MPa. (C) 2014 Elsevier Ltd. All rights reserved.
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