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Title: Short-range ordering mechanics in FCC materials
Short-range order (SRO) has a crucial impact on the mechanical strength of metallic alloys. Recent atomistic investigations defined an average SRO and attempted to correlate it with the yield strength. We propose that the local change in SRO upon slip advance must dictate the strengthening, and we elaborate the methodology to establish the “SRO change” on a slip plane considering the Wigner-Seitz cell. The model captures the variation of lattice resistance (Critical Resolved Shear Stress; CRSS) in the crystal as the SRO changes depending on the probability of neighboring atoms. The methodology was applied to Ni-V binary alloys for a wide range of compositions and stacking fault widths. The complex variation of CRSS with compositional variations shows good agreement with limited experimental results.  more » « less
Award ID(s):
2125821
PAR ID:
10509553
Author(s) / Creator(s):
; ; ; ; ;
Corporate Creator(s):
Editor(s):
NA
Publisher / Repository:
Elsevier
Date Published:
Journal Name:
International Journal of Plasticity
Volume:
174
Issue:
C
ISSN:
0749-6419
Page Range / eLocation ID:
103919
Subject(s) / Keyword(s):
Mechanics of Materials
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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