期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2016.12.078
关键词
Metal matrix composites; Friction; Shearing; Aluminum; Finite element modelling; Triaidality
Unconstrained high pressure torsion (HP'S) tests were performed on two cold-sprayed Al-Al2O3 composites, one with spherical Al2O3 particles and the other with angular. Derivation of stress-strain curves during HPT revealed higher von Mises stress in the spherical sample compared to the angular ones, which is the opposite behavior of that observed in tension. Microstructural analysis revealed extensive crack formation in the angular sample, and fmite element modelling revealed a greater likelihood of crack formation in the vicinity of angular particles.
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