连续定向凝固Al-1%Si合金棒材制备工艺与应用

Preparation Technique and Application of Al-1%Si Alloy Rod Produced by The Ohno Continuous Casting Process

采用自制的真空熔炼、氩气保护连续定向凝固设备制备出具有连续柱状晶组织的Φ8mm的Al 1%Si合金棒材。该棒材具有良好的塑性,不需任何中间退火,在室温下可直接拉拔制备出线径为20μm的超细丝材,其延伸倍数达16万倍。该超细丝材可用作集成电路封装键合丝。

In this paper, a self-made vacuum melting and argon-shield continuous unidirectional solidification equipment is used to produce Al-1%Si alloy rod 8 mm in diameter with continuous columnar Structure. The plasticity of the bar made through this technology is very excellent. The alloy rod 8 mm in diameter can be drawn to ultra-fine wires in diameter of 20 μm at room temperature without any heat treatments, the elongation multiple is as high as 160000. This sort of ultra-fine wires can be used as bonding wires of electronics packaging in 1C industry.