Mg-8Li-3Gd-3Y-0.6Al镁合金的均匀化研究
发布时间：2018-11-21 08:58
【摘要】：为了提高Mg-8Li-3Gd-3Y-0.6Al合金铸锭的力学性能,对合金进行了均匀化退火处理。通过金相显微镜、扫描电镜、显微硬度测试、X射线衍射、拉伸力学性能测试等手段,研究了均匀化条件对Mg-8Li-3Gd-3Y-0.6Al合金的显微组织和力学性能的影响。结果表明,铸态合金经773K 8h的均匀化处理后,铸态时的网状相完全溶解到基体中,第二相弥散分布在基体中,同时退火态合金的抗拉强度达到了154 MPa,比铸态合金提高了23%。合金最佳的均匀化退火工艺是773K 8h,此时该合金具有较好的综合力学性能。
[Abstract]:In order to improve the mechanical properties of Mg-8Li-3Gd-3Y-0.6Al alloy ingot, the alloy was treated by homogenization annealing. The effects of homogenization conditions on the microstructure and mechanical properties of Mg-8Li-3Gd-3Y-0.6Al alloy were studied by means of metallographic microscope, scanning electron microscope, microhardness test, X-ray diffraction and tensile mechanical properties. The results show that after homogenization at 773K for 8 h, the network phase in the as-cast alloy completely dissolves into the matrix, and the second phase diffuses in the matrix, and the tensile strength of the annealed alloy reaches 154 MPa,. The tensile strength of the as-cast alloy is increased by 23% than that of the as-cast alloy. The best homogenization annealing process is 773 K for 8 h, and the alloy has better comprehensive mechanical properties.
【作者单位】： 河南科技大学材料科学与工程学院;河南省有色金属共性技术协同创新中心;
【分类号】：TG146.22
[Abstract]:In order to improve the mechanical properties of Mg-8Li-3Gd-3Y-0.6Al alloy ingot, the alloy was treated by homogenization annealing. The effects of homogenization conditions on the microstructure and mechanical properties of Mg-8Li-3Gd-3Y-0.6Al alloy were studied by means of metallographic microscope, scanning electron microscope, microhardness test, X-ray diffraction and tensile mechanical properties. The results show that after homogenization at 773K for 8 h, the network phase in the as-cast alloy completely dissolves into the matrix, and the second phase diffuses in the matrix, and the tensile strength of the annealed alloy reaches 154 MPa,. The tensile strength of the as-cast alloy is increased by 23% than that of the as-cast alloy. The best homogenization annealing process is 773 K for 8 h, and the alloy has better comprehensive mechanical properties.
【作者单位】： 河南科技大学材料科学与工程学院;河南省有色金属共性技术协同创新中心;
【分类号】：TG146.22
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