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An Investigation of Microstructural Evolution, Tensile Properties and Work-Hardening Behavior of Nanosized TiB 2 /Al-Cu-Mn Composites.
- Source :
- Materials (1996-1944); Oct2020, Vol. 13 Issue 19, p4250, 1p
- Publication Year :
- 2020
-
Abstract
- The microstructure evolution, tensile properties and work-hardening behavior of AA2219 alloy reinforced by in situ nanosized TiB<subscript>2</subscript> particles were studied in this paper. The observation indicated an impeded recrystallization of the matrix alloy by nanosized TiB<subscript>2</subscript> particles, and the hybrids of nanosized TiB<subscript>2</subscript> particles and Al<subscript>2</subscript>Cu phases located at the grain boundary hindered the grain growth. Meanwhile, a large amount fiber textures of <111>//RD (Rolling direction), <110>//RD, <100>//RD <111>//ND (Normal direction), <110>//ND and <100>//ND were detected in nanosized TiB<subscript>2</subscript>/AA2219 composite. Tensile test results exhibited a combination of good strength and ductility of the present composite whose yield strength and tensile strength were 11.4% and 5.8% higher than those of the alloy, while its fracture strain increased slightly. Meanwhile, the correlation between this modified microstructure of nanosized TiB<subscript>2</subscript> particles and comprehensive mechanical properties was established. This study provides a new insight into the fabrication and strengthening behaviors of Al matrix composites reinforced by in situ nanoparticles. [ABSTRACT FROM AUTHOR]
- Subjects :
- NANOPARTICLES
TENSILE strength
CRYSTAL grain boundaries
TENSILE tests
MICROSTRUCTURE
Subjects
Details
- Language :
- English
- ISSN :
- 19961944
- Volume :
- 13
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Materials (1996-1944)
- Publication Type :
- Academic Journal
- Accession number :
- 147001264
- Full Text :
- https://doi.org/10.3390/ma13194250