Tensile behavior change depending on the varying tungsten content of W-Ni-Fe alloys. | [NED University Journal of Research • 2009]

Author(s):

1. Syed Humail Islam: Department of Industrial and Manufacturing Engineering, NED University of Engineering and Technology, Karachi, Pakistan

2. Muhammad Tufail Jokhio: Department of Industrial and Manufacturing Engineering, NED University of Engineering and Technology, Karachi, Pakistan

3. Farid Akhtar: School of Materials Science and Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, PR China

4. Syed Jawaid Askari: School of Materials Science and Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, PR China

5. Xuanhui Qu: School of Materials Science and Engineering, State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, PR China

Abstract:

Tungsten heavy alloys (WHAs) are metal-metal composites consisting of nearly pure spherical tungsten particles embedded in a Ni Fe-W or Ni-CO-W or Ni-Cu-W ductile matrix. In this dual phase alloy, there are several complicated relations between the ductile matrix and hard tungsten particles. The aim of this research was to examine the effect of varying tungsten content on the microstructure and mechanical properties of tungsten heavy alloys. The microstructural parameters (grain size, connectivity, contiguity and solid volume fraction) were measured and were found to have a significant effect on the mechanical properties of tungsten-based heavy alloys. The result shows that the binding strength between the W and the matrix phase has a major influence on the ductility of tungsten-based alloys. The larger this binding force is, the better the ductility is.

Page(s): 36-43

DOI: DOI not available

Published: Journal: NED University Journal of Research, Volume: 6, Issue: 1, Year: 2009

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