Crystallinity Dependence of Grain and Grain Boundary Strength of a Bicrystal Structure of Copper

2021 ◽  
Author(s):  
Ken Suzuki ◽  
Fan Yiqing ◽  
Yifan Luo
Keyword(s):  
Grain Boundary ◽  
Boundary Strength

Impurity effects on grain boundary strength in structural ceramics

2001 ◽  
Vol 319-321 ◽  
pp. 24-30 ◽  
Author(s):  
Yuichi Ikuhara ◽  
Hidehiro Yoshida ◽  
Taketo Sakuma
Keyword(s):  
Grain Boundary ◽  
Structural Ceramics ◽  
Impurity Effects ◽  
Boundary Strength

Effects of interstitial impurities on the grain-boundary strength of molybdenum

1996 ◽  
Vol 74 (2) ◽  
pp. 465-476 ◽  
Author(s):  
K. Hiratsuka ◽  
K. Watanabe ◽  
I. Hashimoto ◽  
H. Yamaguchi
Keyword(s):  
Grain Boundary ◽  
Interstitial Impurities ◽  
Boundary Strength

Grain Boundary Embrittlement and De-Embrittlement in Age Hardenable Iron Alloys

2012 ◽  
Vol 710 ◽  
pp. 11-18
Author(s):  
Yoon Uk Heo ◽  
Hu Chul Lee
Keyword(s):  
Grain Boundary ◽  
Critical Role ◽  
Aging Treatment ◽  
Iron Alloys ◽  
Age Hardening ◽  
Dislocation Glide ◽  
Ti Alloys ◽  
Grain Boundary Embrittlement ◽  
Boundary Embrittlement ◽  
Boundary Strength

Grain boundary embrittlement and de-embrittlement observed in age hardening iron alloys were reviewed. Fe-Mn-Ni and Fe-Ni-Ti alloys show excellent hardening response during aging treatment. However these alloys all suffer grain boundary embrittlemnt and show no tensile ductility even after very short aging treatment. Precipitation of intermetallic phases, θ-MnNi in Fe-Mn-Ni alloys and η-Ni3Ti in Fe-Ni-Ti alloys, at grain or lath boundaries was suggested as the reason for the weakening of grain boundary strength. Grain boundary strength recovered when these precipitates transform to austenite after extended aging. Dislocation glide or dislocation climb did critical role in conversion of these grain boundary precipitates to austenite.

scholarly journals Understanding solute effect on grain boundary strength based on atomic size and electronic interaction

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Zhifeng Huang ◽  
Ping Wang ◽  
Fei Chen ◽  
Qiang Shen ◽  
Lianmeng Zhang
Keyword(s):  
Grain Boundary ◽  
Interfacial Strength ◽  
Atomic Radius ◽  
Electronic Interaction ◽  
Size Mismatch ◽  
Atomic Size ◽  
Electronic Interactions ◽  
Strength Based ◽  
Grain Boundary Embrittlement ◽  
Boundary Strength

Abstract Solute segregating to grain boundary can stabilize the microstructure of nanocrystalline materials, but a lot of solutes also cause embrittlement effect on interfacial strength. Therefore, uncovering the solute effect on grain boundary strength is very important for nanocrystalline alloys design. In this work, we have systematically studied the effects of various solutes on the strength of a Σ5 (310) grain boundary in Cu by first-principle calculations. The solute effects are closely related to the atomic radius of solutes and electronic interactions between solutes and Cu. The solute with a larger atomic radius is easier to segregate the grain boundary but causes more significant grain boundary embrittlement. The weak electronic interactions between the s- and p-block solutes and Cu play a very limited role in enhancing grain boundary strength. While the strong d-states electronic interactions between transition metallic solutes and Cu can counteract embrittlement caused by size mismatch and significantly improve the grain boundary strength. This work deepens our understanding of solute effects on grain boundary strength based on atomic size and electronic interactions.

Sign in / Sign up

Export Citation Format

Share Document