Analysis of isothermal forging process and mechanical properties of complex aluminum forging for aviation
来源期刊：中南大学学报(英文版)2014年第7期
论文作者：胡建良 YI You-ping(易幼平) 黄始全
文章页码：2612 - 2616
Key words：aviation forging; isothermal forging process; uniformity; fracture toughness
Abstract: Large complex 7A85 aluminum wing-body joint was forged employing isothermal forging process and its mechanical properties were studied. The tensile strength after forging is up to 587.5 MPa in longitudinal direction, 15% higher than that using free forging. Moreover, the tensile strength of the forging is almost the same in three directions. Isothermal forging also performs well on overall fracture toughness, with a maximum value of 39.8 MPa·m1/2, and that of short transverse direction all reaches 36 MPa·m1/2 and above, with a maximum relative error of only 3.6%. The results indicate that the isothermal forging leads to better performance as well as higher uniformity in mechanical properties.
HU Jian-liang(胡建良), YI You-ping(易幼平), HUANG Shi-quan(黄始全)
(School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China)
Abstract:Large complex 7A85 aluminum wing-body joint was forged employing isothermal forging process and its mechanical properties were studied. The tensile strength after forging is up to 587.5 MPa in longitudinal direction, 15% higher than that using free forging. Moreover, the tensile strength of the forging is almost the same in three directions. Isothermal forging also performs well on overall fracture toughness, with a maximum value of 39.8 MPa·m1/2, and that of short transverse direction all reaches 36 MPa·m1/2 and above, with a maximum relative error of only 3.6%. The results indicate that the isothermal forging leads to better performance as well as higher uniformity in mechanical properties.
Key words:aviation forging; isothermal forging process; uniformity; fracture toughness
