快速凝固Al－11.5Fe－3.8W－2.3Si－RE耐热铝合金的挤压过程

来源期刊：中南大学学报(自然科学版)1996年第1期

论文作者：张深根 姚德超 杨屹

文章页码：61 - 64

关键词：快速凝固; 耐热铝合金; 挤压比

Key words：rapid solidification; heat resistant aluminium alloy; extrusion ratio

摘    要：快速凝固Al－11.5Fe－3.8W－2.3Si-RE的力学性能强烈地受挤压工艺的影响.采用2次挤压和大挤压比,合金的力学性能显著提高,合金的条带状组织得到改善,第2相强化相粒径控制在40～50NM,合金的断裂方式由脆韧混合型断裂转变为韧性断裂.

Abstract: The extrusion strongly affected the mechanical properties of rapidly soldified Al-11.5Fe3. 8W-2. 3Si-RE aluminium alloy. Double-extrusion and high extrusion ratio remarkably increased the alloy's mechanical properties. The alloy's stripes microstructures can be improved and the diameter of the second phase particles are 40~50 nm and the alloy's fracture changes from brittle or mixed fracture to tenalious fracture.