门窗用Mg-TiAl3合金的性能研究

Study on Properties of Mg-TiAl_3 Alloy Used for Doors and Windows

试验制备了钛镁合金材料,与商用AZ91和AZ31镁合金材料进行了性能对比分析。研究了其抗拉强度、耐腐蚀性能和耐磨性能,并对钛镁合金材料物相组成和显微结构进行了分析。研究表明:钛镁合金材料室温抗拉强度为281.6 MPa,经200 h腐蚀后的抗拉强度为236.5 MPa;腐蚀速率为2.753×10^(-5)g/(cm^2·h);在250 N载荷作用下,磨损速率为0.052 mm^3/m;相组成主要为Mg、Al_3Ti和Mg_(17)Al_(12)。Al_3Ti相和Mg_(17)Al_(12)相的复合作用可以有效提高钛镁合金材料的综合性能。

The titanium and magnesium alloy was prepared to study its properties compared with commercial AZ91 and AZ31 magnesium alloy materials. The tensile strength, corrosion resistance, wear resistance, phases and microstructure were tested and analyzed. The results show that the tensile strength of titanium and magnesium alloy at room temperature is 281.6 MPa, after eroded for 200 h, the tensile strength is 236.5 MPa and corrosion rate is 2.753×10-5 g/（cm2.h）. When the wearing load is 250 N, the wear rate is 0.052 mm3/m. The main phases are Mg, Al3Ti and Mg17Al12. The combined action of the phases of A13Ti and Mg17Al12 can effectively improve the combination properties of the titanium and magnesium alloy.