書誌事項
- タイトル別名
-
- Model experiment on the deformation behavior of porous sintered preforms
- ショウケツタイ ノ アッシュク ヘンケイ モデル
この論文をさがす
抄録
To clarify the pore elimination processes in sintered preforms under static compressive stress, a model experiment is carried out.<BR>Spherical copper particles with particle size between 10 and 12 mesh are sintered in a graphite mold at 1000°C for 1 hr. Sintered preforms with a relative density of 48% are then compressed in cylindrical dies at compacting pressures from 0.5 to 10 ton/cm2 without any lubricant. Preform density after deformation is measured by means of size-weight measuring method and Archimedean method, and plotted against compacting pressure. Pore elimination due to deformation is examined by a scanning electron microscope.<BR>The results obtained are summarized as follows:<BR>1) Deforming process is separated into three characteristic stages. The transition from stage 1 to stage 2 occurs at the preform density of 74% theoretical, and the transition from stage 2 to stage 3 corresponds to the change from continuous to closed pore.<BR>2) Plastic deformation occurs in all the three stages, in stage 1 transitional restacking takes place, in stage 2 local deformation at contacting regions and stage 3 overall deformation of the bulk material.<BR>3) The volume of surface residual pore is about two-thirds of total pore volume.
収録刊行物
-
- 粉体および粉末冶金
-
粉体および粉末冶金 22 (8), 265-270, 1976
一般社団法人 粉体粉末冶金協会
- Tweet
キーワード
詳細情報 詳細情報について
-
- CRID
- 1390282681285095680
-
- NII論文ID
- 130000814541
-
- NII書誌ID
- AN00222724
-
- ISSN
- 18809014
- 05328799
-
- NDL書誌ID
- 1693298
-
- データソース種別
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- 抄録ライセンスフラグ
- 使用不可