1. Hot Workability and Flow Characteristics of Aluminum-5 wt.% B4C Composite
- Author
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S. Gangolu, V.P. Deshmukh, A.G. Rao, Bhagwati Prasad Kashyap, and Nityanand Prabhu
- Subjects
Behavior ,Materials science ,Constitutive Relation ,Deformation (mechanics) ,Hot Deformation ,Scanning electron microscope ,Mechanical Engineering ,Constitutive equation ,Composite number ,Boron carbide ,Strain rate ,Flow stress ,Compression (physics) ,chemistry.chemical_compound ,chemistry ,Al-B4c Composite ,Metal-Matrix Composites ,Mechanics of Materials ,Processing Map ,Superplasticity ,General Materials Science ,Composite material ,Workability - Abstract
Flow behavior of aluminum-5 wt.% boron carbide (Al-B4C) composite was investigated by carrying out compression tests over a range of strain rates (10(-4)-10(0) s(-1)) and temperatures (200-500 A degrees C). The flow stress data obtained from these tests at true strain 0.5 were used to develop processing map. The stable and instable flow regimes in the map were characterized by the microstructural examination using Scanning Electron Microscopy and Electron Backscattered Diffraction. The optimum condition for processing of Al-5%B4C composite was found to lie between 425 and 475 A degrees C at the strain rate of around 10(-4) s(-1). A strain-compensated Sellars-McG Tegart constitutive equation was established to model high-temperature deformation behavior of the material.
- Published
- 2014