论文部分内容阅读
考察了挤压压力和稀土元素Ce对铝铜合金性能的影响。结果表明:随着挤压压力的增加,铝铜合金的力学性能提高了,在最佳压力50 MPa下,抗拉强度和伸长率分别为209 MPa和16.5%,较未施加压力得到的铸件的抗拉强度和伸长率分别提高了11 MPa和3.6%;当稀土元素Ce的添加量为0.15%时,抗拉强度和伸长率分别为279 MPa和23.4%,比未添加稀土铸件的抗拉强度和伸长率分别提高了70 MPa和6.9%;合理的挤压压力和适量的Ce添加有效提高了铝铜合金的性能,更好地满足了汽车轻量化设计的需要。
The effects of extrusion pressure and rare earth element Ce on the properties of aluminum-copper alloy were investigated. The results show that with the increase of extrusion pressure, the mechanical properties of the aluminum-copper alloy are improved. The tensile strength and elongation of the aluminum-copper alloy are 209 MPa and 16.5% respectively at the optimum pressure of 50 MPa, The tensile strength and elongation increased by 11 MPa and 3.6% respectively. When the content of rare earth element Ce was 0.15%, the tensile strength and elongation were 279 MPa and 23.4%, respectively, which were higher than those of non-added rare earth castings And elongation increased by 70 MPa and 6.9% respectively. Reasonable extrusion pressure and proper amount of Ce addition effectively improved the properties of aluminum-copper alloy and better met the needs of vehicle lightweight design.