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Meeting Materials Science & Technology 2020
Symposium Light Metal and Composites Technology
Presentation Title Microstructure and Interfaces of Nanocomposites Manufactured in Solid State
Author(s) Ramasis Goswami
On-Site Speaker (Planned) Ramasis Goswami
Abstract Scope Al2O3 and B4C are the armor grade ceramic materials with considerably high compressive strength and Hugoniot elastic limit (HEA). Studies indicate a few percent total weight reduction can lead to a several percent increase in mobility and survivability. Considerable efforts have been made to manufacture metal matrix composites (MMCs) to enhance the mechanical properties by adding various volume fractions of B4C or SiC powder to achieve higher homogeneity of ceramic particles in the matrix. Here we present the recent development of Al/B4C and Cu/Al2O3 MMCs processed in the solid state. In all cases, the composites show higher hardness as compared to the base metals and alloys. We investigate the microstructure and interfacial characteristics of the composites processed at relatively high pressure using x-ray diffraction (XRD) and transmission electron microscopy (TEM), and demonstrate that the formation of interfacial phase during sintering improves interface cohesion and mechanical properties significantly.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Novel Equiatomic and Non-equiatomic Low-density High Entropy Alloys and Composites
Developments in Titanium Alloys for Aero-engine Applications
Effect of Cu Content on Tensile and Low Cycle Fatigue Properties of Cast Al-Cu-Mn-Zr Alloys
Functional Relationships between Treatment Time, Microstructure and Mechanical Properties of Ultrasonically Cast Metal Matrix Nanocomposites
Introductory Comments: Light Metals and Composite Technology
Joining of Light Metals to Polymer Composites by Overcasting Technique
Metastable f.c.c. Phase and Its Influence on the Soft-magnetic Properties of FeCoNiAlxSix (0.2 < x < 0.5) Alloys
Microstructure and Interfaces of Nanocomposites Manufactured in Solid State
Microstructure, Interfaces, and Mechanical Properties of Ceramic Matrix Composites
Nanostructured Composites via Environmentally Controlled Pressure Assisted Sintering
Poly(Carborane-siloxane-(aryl)Acetylene)s: A Versatile Inorganic-Organic Polymer Platform for Advanced Materials Applications
Revisiting Phase Field Simulations of Theta’ Variant Selection during Stress Aging of Al-Cu Alloys

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