Hot powder vehicle compaction of an atomized stainless steel powder

Masafumi Miyajima, Akira Kawasaki, Ryuzo Watanabe

研究成果: Article査読

抄録

Densification and microstructural development of stainless steel powder compacts during hot powder vehicle compaction was investigated. The preheated powder preform, vacuum encapsuled in a borosilicate glass, was compacted in a steel die using preheated alumina granules as a pressure transmitting medium. The condition for the full-densification was determined as a function of pressure and temperature. Three microstructural features were observed during the compacting process; solutioning of dendritic structure, recrystallization and normal grain growth, which in turn was found to be mainly dependent on preheating temperature. It has been found that a submicron-sized micro-structure is formed during the recrystallization stage. The densification mechanism of the present compaction process has been discussed on the basis of a concept of pressure sintering map.

本文言語English
ページ(範囲)799-804
ページ数6
ジャーナルNippon Kinzoku Gakkai-si
53
8
DOI
出版ステータスPublished - 1989

ASJC Scopus subject areas

  • 凝縮系物理学
  • 材料力学
  • 金属および合金
  • 材料化学

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