紀要論文

紀要論文

text

Transactions of JWRI. 2006, 35(2), p. 47-51

Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation

英語

text

2006-12

The effect of lubricant particles premixed with iron alloy powder on warm compaction behavior was investigated by using the Cooper-Eaton equation based on a probabilistic approach. In particular, the melting point of the lubricant was examined. Particle rearrangement significantly progresses during warm compaction when the powder temperature is lower than the lubricant melting point. On the other hand, it is hindered when the lubricant is in a liquid state at the elevated temperature. This is due to the strong dependence of the particle rearrangement on the lubrication effect between iron particles, and the formability of the solid lubricant film is poor when the temperature is beyond its melting point. The plastic deformation of iron alloy powder shows little effectiveness on the warm compaction behavior because of the small change in its compaction proof-strength at applied temperatures below 473K. The calculated total fractional volume compaction corresponds to the measured green density. This analytical method is available for quantitatively evaluating the warm compaction behavior in the powder metallurgy (PM) process.

10.18910/12672

12672

Analysis of Warm Compaction Behavior of Iron Powder Particles via Cooper-Eaton Equation

大阪大学接合科学研究所

英語

2006-12

Transactions of JWRI

35

2

47

51

https://hdl.handle.net/11094/12672

10.18910/12672

https://doi.org/10.18910/12672