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Multiple Deformation Mechanisms in Adiabatic Shear Bands of a Titanium Alloy during High Strain Rate Deformation.
Guan, Xinran; Liu, Dongrong; Qu, Shoujiang; Cao, Guojian; Wang, Hao; Feng, Aihan; Chen, Daolun.
Afiliación
  • Guan X; School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China.
  • Liu D; School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin 150040, China.
  • Qu S; School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
  • Cao G; Shanghai Key Laboratory of D&A for Metal-Functional Materials, School of Materials Science & Engineering, Tongji University, Shanghai 201804, China.
  • Wang H; Key Laboratory for Light-Weight Materials, Nanjing Tech University, Nanjing 210009, China.
  • Feng A; Interdisciplinary Center for Additive Manufacturing, School of Materials and Chemistry, University of Shanghai for Science and Technology, Shanghai 200093, China.
  • Chen D; School of Materials Science and Engineering, Tongji University, Shanghai 201804, China.
Materials (Basel) ; 17(15)2024 Jul 24.
Article en En | MEDLINE | ID: mdl-39124309
ABSTRACT
The occurrence of adiabatic shear bands, as an instability phenomenon, is viewed as a precursor to failure caused by instability at high strain rates. Metastable ß titanium alloys are extensively utilized due to their excellent mechanical properties, which are often subjected to high strain rate loads in service conditions. Understanding and studying their adiabatic shear instability behavior is thus crucial for preventing catastrophic failure and enhancing material performance. In this study via detailed microstructural analyses in the adiabatic shear region of a Ti-10V-2Fe-3Al alloy subjected to high strain rates, it was observed that α″ martensitic transformation and nano-twinning plus ß-to-α phase transformation with α″ martensite as an intermediate phase occurred, in addition to substantial fine grains. The grain refinement mechanisms were mainly related to dynamic recovery dominated by dislocation migration alongside severe plastic deformation.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Materials (Basel) Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Suiza