Surface Mechanical Attrition Treatment-Induced Dissolution of Cu4Ti Precipitates in Cu—4wt-%Ti Alloy
The microstructural evolution of an overaged Cu-4wt-%Ti alloy associated with surface mechanical attrition treatment (SMAT) has been studied by X-ray diffraction, scanning electron microscope and transmission electron microscopy. The results show that β-Cu4Ti precipitates in the topmost surface layer were dissolved after SMAT, and Cu solid solution phase with a fine grain size of approximately 25 nm was observed. Dislocation activities were the main deformation mechanism of lamellar structure in the overaged Cu-4wt-%Ti alloy. The twinning in lamellar Cu phase was inhibited by the β-Cu4Ti precipitates.
H. Wei et al., "Surface Mechanical Attrition Treatment-Induced Dissolution of Cu4Ti Precipitates in Cu—4wt-%Ti Alloy," Materials Science and Technology (United Kingdom), vol. 36, no. 6, pp. 661 - 667, Taylor & Francis Ltd., Apr 2020.
The definitive version is available at https://doi.org/10.1080/02670836.2020.1726600
Materials Science and Engineering
Keywords and Phrases
Aging Treatment; Dislocation Activities; Dissolution; Surface Mechanical Attrition Treatment; Î²-Cu4Ti Precipitates
International Standard Serial Number (ISSN)
Article - Journal
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01 Apr 2020