The invention belongs to the technical field of aluminum alloy material structural part manufacturing, and relates to a large high-strength heat-resistant aluminum alloy hub forge piece and a preparation method thereof, and the method is suitable for preparing a large hub with the diameter (phi 500-phi 800 mm) * the depth (200-400 mm) * the outer wall thickness (20-50 mm). Compared with a conventional hub, the preparation method suitable for the Al-Cu-Mg-Ag alloy large hub forge piece is obtained by optimizing alloy components and combining the processes of extrusion and forging composite cogging, medium-temperature die forging, subzero treatment and the like, and the large hub forge piece has the excellent performance of high strength and heat resistance. The room temperature yield strength is higher than 450 MPa, the tensile strength is higher than 500 MPa, and the ductility is higher than 8%. The tensile yield strength at the high temperature of 150 DEG C is higher than 400 MPa, the tensile strength is higher than 450 MPa, and the ductility is higher than 10%. And the tensile yield strength at the high temperature of 200 DEG C is higher than 350 MPa, the tensile strength is higher than 400 MPa, and the ductility is higher than 12%.
本发明属于铝合金材料结构件制造技术领域,涉及一种大型高强耐热铝合金轮毂锻件及其制备方法,该方法适用于制备直径(Φ500mm~Φ800mm)×深度(200mm~400mm)×外壁厚(20mm~50mm)的大型轮毂。相比于常规轮毂,本发明通过优化合金成分、结合挤压+锻造复合开坯、中温模锻、深冷处理等工艺获得了适用于Al‑Cu‑Mg‑Ag合金大型轮毂锻件的制备方法,使大型轮毂锻件具有高强耐热的优异性能。其室温屈服强度高于450MPa,抗拉强度高于500MPa,延伸率高于8%。150℃高温拉伸屈服强度高于400MPa,抗拉强度高于450MPa,延伸率高于10%。200℃高温拉伸屈服强度高于350MPa,抗拉强度高于400MPa,延伸率高于12%。
Large high-strength heat-resistant aluminum alloy hub forging and preparation method thereof
一种大型高强耐热铝合金轮毂锻件及其制备方法
2024-09-27
Patent
Electronic Resource
Chinese
IPC: | C22C Legierungen , ALLOYS / B21K MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS , Herstellen von Schmiede- oder Presserzeugnissen aus Metall, z.B. Hufeisen, Nieten, Bolzen oder Rädern / B60B VEHICLE WHEELS , Räder für Fahrzeuge / C22F CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS , Verändern der physikalischen Struktur von Nichteisenmetallen oder Nichteisenlegierungen / B21J FORGING , Schmieden |
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