黄玲,李海,王芝秀,郑子樵

• 1:常州大学材料科学与工程学院
• 2:常州大学常州市先进金属材料重点实验室
• 3:中南大学材料科学与工程学院

摘要(Abstract)：

采用X射线衍射、金相显微镜、扫描电镜、能谱分析及拉伸性能测试等方法,研究3种成分Al-Cu-Ce合金的显微组织与力学性能。结果表明:铸态Al-14Cu-7Ce合金由α-Al+Al8CeCu4片状共晶组成,而Al-10Cu-5Ce、Al-18Cu-9Ce合金中除含有α-Al+Al8CeCu4共晶组织外,还分别含有α-Al和Al8CeCu4初生相。铸态Al-14Cu-7Ce合金具有优良耐热性能,即使550℃×3 h退火后仍能保持约360 MPa的抗拉强度,退火导致合金强度下降的主要原因是高温下共晶Al8CeCu4相的球化。经充分球化退火后,Al-Cu-Ce合金能获得良好的热轧、冷轧变形能力,并且变形态合金也具有良好的耐热性能,因而Al-Cu-Ce合金有望成为一种兼具铸造和变形两用的新型耐热铝合金。

关键词(KeyWords)： Al-Cu-Ce合金;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 国家“973”重点基础研究发展规划资助项目(2005CB623705)

作者(Author): 黄玲,李海,王芝秀,郑子樵

DOI: 10.13289/j.issn.1009-6264.2012.09.008

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