Campus Units

Materials Science and Engineering, Ames Laboratory

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

1-1-2019

Journal or Book Title

Scripta Materialia

Volume

158

First Page

62

Last Page

65

DOI

10.1016/j.scriptamat.2018.08.035

Abstract

A semi-empirical approach based on the compositional average electron-to-atom ratio (e/a¯) and atomic radius difference (∆r¯) was proposed to refine the “d-electron method”. The e/a¯−∆r¯ diagram shows that Twinning/Stress-Induced Martensite (SIM) activates when ∆r¯ > −2.5, and a low e/a¯ or absolute value of ∆r¯ favors Twinning/SIM by reducing the resistance of lattice shear. In addition to the phase stability, it suggests that the valence electron number and atomic radius of alloying element also determine the deformation mechanism in body-centered cubic Ti alloys. This alloy design method was verified by the tensile results of Ti-4Mo-4Co and Ti-6Mo-4Zr (at.%) alloys.

Comments

This is a manuscript of an article published as Wang, C. H., A. M. Russell, and G. H. Cao. "A semi-empirical approach to the prediction of deformation behaviors of β-Ti alloys." Scripta Materialia 158 (2019): 62-65. DOI: 10.1016/j.scriptamat.2018.08.035. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Acta Materialia Inc.

Language

en

File Format

application/pdf

Available for download on Saturday, August 29, 2020

Published Version

Included in

Metallurgy Commons

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