Ballistic and Corrosion Analysis of New Military-Grade Magnesium Alloys AMX602 and ZAXE1711 For Armor Applications.

摘要

Since 2006, the U.S. Army has been evaluating magnesium (Mg) alloys for ballistic structural applications. While Mg alloys have been used in military structural applications since World War II, very little research has been done to improve their mediocre ballistic performance. The Army s need for ultra-lightweight armor systems has led to research and development of high- strength, high-ductility Mg alloys. The U.S. Army Research Laboratory (ARL) and the Joining and Welding Research Institute (JWRI) of Osaka University collaborated to develop the next generation of high-strength, high-ductility Mg alloys using a novel Spinning Water Atomization Process for rapid solidification. New alloys AMX602 and ZAXE1711 in extruded bar form are characterized for microstructure, mechanical, corrosion resistance, and ballistic response. Corrosion evaluations included neutral salt fog, GM 9540P, and cyclic polarization comparisons. Increases in ballistic performance and favorable corrosion resistance were evident when compared to the baseline armor alloy AZ31B.