Abstract
Metal powders produced by mechanical milling show the specific microstructures and properties. With these merits preserved, the powders should be combined into a large size compact. Saito et al. and Kimura et al. have succeeded in consolidating the iron powders into 1 ∼ 2.5 mm thick sheets by sheath rolling at a relatively low temperature of 973K. Based upon their success, we have attempted to apply caliber rolling for consolidating the powders into a large bar (φ11 × 1000 mm). The sheath can was filled with pure iron powders, sealed in vacuum, and then rolled. When the rolling temperature was 973K, rolling reduction of more than 80% was enough to make sound compacts of >10 mm diameter with fine microstructure and relative density larger than 99.6%. When the rolling reduction was 90%, the consolidation was accomplished in a wide range of rolling temperature between 1273K and 823K. At 823K and 873K, the sound consolidation could be realized without recrystallization. The tensile propertie s were better than those of the HIP treated compact. Hence, the solid-state joining is confirmed to occur much easier in the present method than in the HIP method.
| Original language | English |
|---|---|
| Pages (from-to) | 480-485 |
| Number of pages | 6 |
| Journal | Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan |
| Volume | 87 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jan 1 2001 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Metals and Alloys
- Materials Chemistry
Cite this
Consolidation of sheathed pure iron powders by warm caliber rolling. / Otaguchi, M.; Wanikawa, S.; Tsuzaki, Kaneaki; Nagai, K.
In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 87, No. 7, 01.01.2001, p. 480-485.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Consolidation of sheathed pure iron powders by warm caliber rolling
AU - Otaguchi, M.
AU - Wanikawa, S.
AU - Tsuzaki, Kaneaki
AU - Nagai, K.
PY - 2001/1/1
Y1 - 2001/1/1
N2 - Metal powders produced by mechanical milling show the specific microstructures and properties. With these merits preserved, the powders should be combined into a large size compact. Saito et al. and Kimura et al. have succeeded in consolidating the iron powders into 1 ∼ 2.5 mm thick sheets by sheath rolling at a relatively low temperature of 973K. Based upon their success, we have attempted to apply caliber rolling for consolidating the powders into a large bar (φ11 × 1000 mm). The sheath can was filled with pure iron powders, sealed in vacuum, and then rolled. When the rolling temperature was 973K, rolling reduction of more than 80% was enough to make sound compacts of >10 mm diameter with fine microstructure and relative density larger than 99.6%. When the rolling reduction was 90%, the consolidation was accomplished in a wide range of rolling temperature between 1273K and 823K. At 823K and 873K, the sound consolidation could be realized without recrystallization. The tensile propertie s were better than those of the HIP treated compact. Hence, the solid-state joining is confirmed to occur much easier in the present method than in the HIP method.
AB - Metal powders produced by mechanical milling show the specific microstructures and properties. With these merits preserved, the powders should be combined into a large size compact. Saito et al. and Kimura et al. have succeeded in consolidating the iron powders into 1 ∼ 2.5 mm thick sheets by sheath rolling at a relatively low temperature of 973K. Based upon their success, we have attempted to apply caliber rolling for consolidating the powders into a large bar (φ11 × 1000 mm). The sheath can was filled with pure iron powders, sealed in vacuum, and then rolled. When the rolling temperature was 973K, rolling reduction of more than 80% was enough to make sound compacts of >10 mm diameter with fine microstructure and relative density larger than 99.6%. When the rolling reduction was 90%, the consolidation was accomplished in a wide range of rolling temperature between 1273K and 823K. At 823K and 873K, the sound consolidation could be realized without recrystallization. The tensile propertie s were better than those of the HIP treated compact. Hence, the solid-state joining is confirmed to occur much easier in the present method than in the HIP method.
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U2 - 10.2355/tetsutohagane1955.87.7_480
DO - 10.2355/tetsutohagane1955.87.7_480
M3 - Article
AN - SCOPUS:0035392519
VL - 87
SP - 480
EP - 485
JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
SN - 0021-1575
IS - 7
ER -