Surface-enhanced LPSO phase containing rapid degradation magnesium alloy and preparation method thereof

• Main Authors: ZHANG YUEZHONG, CAO MIAOMIAO, CHAI YUESHENG, REN XIAOXIA, WEI YINGHUI, LIU BAOSHENG
• Format: Patent
• Language: Chinese; English
• Published: 05.06.2020
• Subjects: ALLOYS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FERROUS OR NON-FERROUS ALLOYS; FIXED CONSTRUCTIONS; METALLURGY; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a surface-enhanced LPSO phase containing rapid degradation magnesium alloy and a preparation method thereof. The alloy is prepared from, by mass percent, 2%-8% of Y, 1%-4% of Zn, 1%-4% of Cu, 0.2%-1% of Gd, 0.1%-0.3% of Zr and the balance Mg and other impurity elements. According to the surface-enhanced LPSO phase containing rapid degradation magnesium alloy and the preparation method thereof, Cu is added to increase the corrosion rate of the alloy; Y, Gd and Zn are added, a long-period stacking orderly phase (LPSO) is formed by Cu, and therefore the mechanical performance of the alloy is guaranteed; and the grain size on the surface of the alloy is refined through intense shot blasting, the strength and wear resistance of the surface of the alloy are improved, andthe need that the alloy can be rapidly degraded is met better. 本发明公开了一种表面增强含LPSO相快速降解镁合金及其制备方法，合金中各元素的质量百分比为：2-8%Y，1-4%Zn，1-4%Cu，0.2-1%Gd，0.1-0.3%Zr，其余为Mg及其他杂质元素。本发明中通过加入Cu元素来提高合金的腐蚀速率，通过加入Y，Gd元素与Zn，Cu元素形成长周期堆垛有序相（LPSO），以保证合金