Fabrication of Tool Steels by MIM and Its Mechanical Properties.

• Kyogoku Hideki

  Department of Mechanical Systems Engineering, School of Engineering, Kinki University

• Nakayama Hideki

  King Invest Co., Ltd.

• Komatsu Shinichiro

  Department of Mechanical Systems Engineering, School of Engineering, Kinki University

抄録

The effects of sintering conditions and heat-treatment conditions on the mechanical properties of sintered tool steel(AISI D2)compacts were investigated. An AISI D2 gas atomized powder and polyamide binder were mixed well and injection molded into metallic molds for transverse test specimen. These injection-molded compacts were debound at 593 K and then sintered at various temperatures between 1473 K and 1483 K. The sintered compacts were annealed at 1173 K and quenched from 1293 K, and then were tempered at various temperatures between 453 K and 803 K. The relative density increased with increase in sintering temperature and showed to be more than 99 in the case of 1483 K. The hardness decreased with elevating the tempering temperature and showed to be larger than 58 HRC in the case of 543 K. The transverse rupture strength of the compacts sintered at 1473 K and 1478 K showed to be larger than 3000 MPa regardless the tempering temperatures. The tool steel compacts of which mechanical properties were equivalent to those of the wrought tool steels could be fabricated by controlling the sintering and heat-treatment conditions precisely.

収録刊行物

• 粉体および粉末冶金

  粉体および粉末冶金 46 (8), 853-857, 1999

  一般社団法人 粉体粉末冶金協会

キーワード

• metal injection molding
• sintering
• heat treatment
• tool steel
• density
• microstructure
• mechanical properties

詳細情報

• CRID: 1390001206307607168
• NII論文ID: 10005741051
• NII書誌ID: AN00222724
• DOI: 10.2497/jjspm.46.853
• ISSN: 18809014
• ISSN: 05328799
• NDL書誌ID: 4832725
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4832725
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可