W-Ni-Fe系焼結合金の衝撃曲げ特性
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An impact test was carried out to evaluate the effects of notch shape and tungsten content on the impact absorbed energy of Iiquid phase sintered W-Ni-Fe heavy alloys.<BR>The microstructure of the alloys consists of rounded, single crystal tungsten grains in a matrix phase. Several samples of different mechanical properties, and of different notch shapes and tungsten contents of the test pieces were tested, and, as a result the fractography and the fracture patterns were observed by using scarring electron microscopes.<BR>It was confirmed that the notch shape influenced on the impact absorbed energy and the bonding force of the interface between the matrix phase and the tungsten grain.<BR>By considering these characteristics, a fracture model of W-Ni-Fe heavy alloy was proposed after the discussion of fracture mechanism
- 社団法人 粉体粉末冶金協会の論文
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