Al-Cu-Zr和Al-Cu-Zr-Ti-V合金中Al3Zr析出相的析出行为

• Published in: 中国有色金属学报（英文版） Vol. 22; no. 8; pp. 1860 - 1865
• Main Authors: 贾志宏, Jean-Philippe COUZINI(E), Nadia CHERDOUDI, van GUILLOT, Lars ARNBERG, Petter (A)SHOLT, Stig BRUSETHAUG, Bruno BARLAS, Denis MASSINON
• Format: Journal Article
• Language: Chinese
• Published: Department of Materials Science and Engineering, Norwegian University of Science and Technology,NO-7491, Trondheim, Norway%Institut de Chimie et des Matériaux Paris-Est, UMR 7182 CNRS-Unversité Paris Val de Marne,2-8 rue Henri Dunant, 94320 Thiais, France%Department of Materials Science and Engineering, Norwegian University of Science and Technology,NO-7491, Trondheim, Norway%Hydro Aluminium Research and Technology Development, N-6601 Sunndals(Φ)ra,Norway Montupet SA, 60181 Nogent sur Oise Cedex, France%Mentupet SA, 60181 Nogent sur Oise Cedex, France 2012; 重庆大学材料科学与工程学院,重庆400044
• Subjects: 相转变; Al3Zr析出相; phase transformation; aluminium alloys; Al3Zr precipitate; 铝合金
• DOI: 10.1016/S1003-6326(11)61398-8
• ISSN: 1003-6326

利用透射电子显微技术研究A1-Cu-Zr和Al-Cu-Zr-Ti-V合金中Al3Zr的沉淀析出行为.亚稳态的Al3Zr沉淀相在枝晶中心均匀形核并获得均匀分布.然而,在枝晶边缘区域的析出复杂,观察到由许多球形Al3Zr析出颗粒组成的螺旋状和条状的形貌.条状的沉淀团簇沿 铝方向优先排列,这可能与Al2Cu的亚稳态θ'和稳态θ析出相相关.添加铜有利于Al3Zr沉淀相从L12→D023的结构转变.