Degradation of Hardness of Alloys from Phase Coarsening

Ji Cheng Li; Ke Gang Wang

doi:10.4028/www.scientific.net/MSF.941.759

Paper Titles

Ultrasonic Spot Welding of an Aluminum Alloy for Automotive Applications
p.735

Elemental Segregation and O-Phase Formation in a Gamma-TiAl Alloy
p.741

Effect of α₂ Precipitation on Creep and Tensile Properties of Ga-Added Near-α Titanium Alloys
p.747

Microstructural Comparison of an Al-8.0Zn-1.8Mg-2.0Cu Alloy with Typical T6 and T76 Tempers
p.753

Degradation of Hardness of Alloys from Phase Coarsening
p.759

Formation of Secondary Phases in the Boundary between Surface Defect Grains and Matrix in Third Generation Nickel-Based Single Crystal Superalloy Turbine Blades
p.766

Strengthening of a CoCrFeNiMn-Type High Entropy Alloy by Regular Arrays of Nanoprecipitates
p.772

Technical Advancement in Fabricating Dispersion Strengthened Copper Alloys by Mechanical Alloying and Hot Isostatic Pressing for Application to Divertors of Fusion Reactors
p.778

Forging Process Design and Simulation Optimization of a Complex-Shaped Aluminium Alloy Component
p.784

HomeMaterials Science ForumMaterials Science Forum Vol. 941Degradation of Hardness of Alloys from Phase...

Degradation of Hardness of Alloys from Phase Coarsening

Abstract:

The hardness of alloys after phase coarsening is analyzed through the linkage between the multiparticle diffusion simulation and the finite element method simulation. Our analysis demonstrates that considerable degradation of the hardness of alloys occurs due to phase coarsening, which is related to the precipitate sizes and their distribution within the alloy. The microstructural evolution alters the manners of the nucleation, multiplication and movement of dislocations within the material, and further leads to different degradation of macroscopic hardness of alloys.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 941)

Pages:

759-765

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.759

Citation:

Cite this paper

Online since:

December 2018

Authors:

Ji Cheng Li, Ke Gang Wang*

Keywords:

FEM Simulation, Hardness, Multiparticle Diffusion Simulation, Phase Coarsening

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

* - Corresponding Author

References

[1] K.G. Wang, M.E. Glicksman, Ostwald ripening in materials processing, in: J.R. Groza, J.F. Shackelford, E.J. Lavernia, M.T. Powers (Eds.), Materials Processing Handbook, CRC Press, Boca Raton (FL), 2007, p.5.1-5.20.

DOI: 10.1080/10426914.2012.689459

Google Scholar

[2] B. Pletcher, Kinetics of aluminium-lithium alloys, Doctor thesis: University of Florida, (2009).

Google Scholar

[3] B. Pletcher, K.G. Wang, M.E. Glicksman, Theoretical, computational and experimental studies of δ' phase coarsening in Al-Li alloys, Acta Mater. 60 (2012) 5803-5817.

DOI: 10.1016/j.actamat.2012.07.021

Google Scholar

[4] K.G. Wang, M.E. Glicksman, K. Rajan, Length scales in phase coarsening: Theory, simulation, and experiment, Comput. Mater. Sci. 34 (2005) 235-253.

DOI: 10.1016/j.commatsci.2004.11.005

Google Scholar

[5] ASTM E92, Standard test method for Vickers hardness of metallic materials, American Society for Testing and Materials, West Conshohocken, PA, USA, (1997).

Google Scholar

[6] LSTC, LS-DYNA Keyword User's Manual (Version 971), Livermore Software Technology Corporation (LSTC), Livermore, CA, (2007).

Google Scholar

[7] J. Washburn, A. Kelly, G.K. Williamson, Direct observation of dislocations in magnesium oxide, Philos. Mag. 5 (1960) 192-193.

DOI: 10.1080/14786436008243303

Google Scholar

[8] A.J.E. Foreman, M.J. Makin, Dislocation movement through random arrays of obstacles, Philos. Mag. 14 (1966) 911-924.

DOI: 10.1080/14786436608244762

Google Scholar