Fracture Toughness of WC-Co Alloys Precracked by Spark Erosion Technique

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概要

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• EDM technique proves to be a suitable method for precracking of WC-Co fracture toughness specimens. The notch may be produced by either a wedge-ended plate or a wire. K<SUB>IC</SUB> for these specimens with the notch root radii around 200μm are consitent (one standard deviation about 5% of the mean), and about 8 to 14% higher than those obtained using other precracking methods. No significant difference was observed between K<SUB>IC</SUB> values for surface ground samples and those tested in as sintered condition.

• 社団法人 粉体粉末冶金協会の論文

著者

• Shima Susumu

  Department Of Mechanical Engineering Kyoto University

• Haerian Ali

  Department of Mechanical Engineering, Mashhad University

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• Fracture Toughness of WC-Co Alloys Precracked by Spark Erosion Technique

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