발간논문

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Vol.30, No.3, 262 ~ 270, 1992
Title
The Effects of Cold Working and Ageing Treatment on the Mechanical properties of W Heavy Alloy
송흥섭H . S . Song, 김은표E . P . Kim, 이성S . Lee, 노준웅J .W . Noh, 백운형W . H . Baek, 천병선B . S . Chun
Abstract
Tungsten heavy alloys are successful combinations of strong W grain and ductile Ni base matrix. Its high density and strength combined with excellent ductility are the principal advantages of these alloys. The purpose of this study was to understand the effects of cold working and post-ageing treatments on the mechanical properties using the classical approach of sintering compacts from a mixture of 93W-4. 9Ni-2.1Fe system. By using the ageing treatment, the strength and hardness were increased with ageing temperatures and showed maximum strength at 600℃ for the 15% cold worked specimens; whereas, ductility was minimum. Strengthening by the ageing treatment might be attributed to the very fine dispersed precipitates in W grains.
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