摘要
研究了 93W 5Ni 2Cu和 93W 4 9Ni 2 1Fe在不同温度下的温压成形行为。结果表明 :与常温成形相比 ,温压能够明显地提高压坯密度 ,在 1 5 0℃时 93W 4.9Ni 2 .1Fe和 93W 5Ni 2Cu压坯的密度分别提高 0 2 6g/cm3 和 0 97g/cm3 ;温压成形能显著的降低压坯的弹性后效 ;W Ni Cu粉末温压压坯在脱模过程中 ,脱模力发生波动 ,在压坯运动瞬间达到最大后迅速降低 ;W Ni Cu粉末在相同载荷作用、温压条件下的位移大于常温下 ;压坯经烧结后 ,温压坯件的径向收缩小于常温坯件 ;
The shaping behavior of 93W 5Ni 2Cu and 93W 4 9Ni 2 1Fe was studied during warm compacting at different temperatures The results show that warm compaction increases the density of greens effectively, and the peak of the density tempcrature plot appears at 150℃; compared with the compaction at room temperature, warm compaction(WC) remarkably reduces green's spring back, the ejection force applied to warm compacted green of W Ni Cu fluctuates markedly and decreases greatly while green moves in the die; for W Ni Cu powder. After sintering the displacement during WC is larger than that at room temperature under the same pressure, the radial shrinkage of WC parts is lower, and WC can improve microstructure of high density tungsten alloys
出处
《粉末冶金工业》
CAS
2003年第3期31-35,共5页
Powder Metallurgy Industry
基金
国家"8 6 3"高技术重点资助项目(项目编号 715- 0 12 - 0 0 6 0 )
