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The microstructure and mechanical behavior of modern high temperature alloys

In this summary, we briefly review the recent studies focused on the structure and mechanical behavior of HEAs, covering the important issues from phase stability to elastic modulus, mechanical strength, hardness and fatigue resistance. Finally, we highlight a few key findings recently reported for HEAs and discuss the outstanding issues yet to be resolved. | The microstructure and mechanical behavior of modern high temperature alloys Engineering Solid Mechanics 3 2015 1-20 Contents lists available at GrowingScience Engineering Solid Mechanics homepage www.GrowingScience.com esm The microstructure and mechanical behavior of modern high temperature alloys A.T. Samaeia M.M. Mirsayarb and M.R.M. Aliha c a School of Engineering University of California Merced Merced California 95343 USA b Zachry Department of Civil Engineering Texas A amp M University College Station TX 77843-3136 USA c Welding and Joining Research Center School of Industrial Engineering Iran University of Science and Technology Narmak 16846-13114 Tehran Iran ARTICLE INFO ABSTRACT Article history Over the past decades high entropy alloys HEAs have attracted continuously increasing Received September 6 2014 research efforts because of their technological promise for structural applications and their Accepted 2 January 2015 scientific interest as a multi-component alloy exhibiting an overall random solid solution Available online structure with high mixing entropy at high temperature. In this summary we briefly review the 5 January 2015 recent studies focused on the structure and mechanical behavior of HEAs covering the Keywords High Entropy Alloy important issues from phase stability to elastic modulus mechanical strength hardness and Phase Stability fatigue resistance. Finally we highlight a few key findings recently reported for HEAs and Mechanical Properties discuss the outstanding issues yet to be resolved. Structure-Property Relation 2015 Growing Science Ltd. All rights reserved. 1. Introduction The notion of High Entropy Alloy HEA was proposed by Yeh and co-workers 2004a . Since then a continuously increasing research interest has been simulated in the field of materials science and engineering because of the promise that through the new routes of HEA design materials scientists may obtain new alloys with novel properties which cannot be achieve .