Novel porous CuAlMn shape memory alloys (SMAs) with interconnected pores and polystyrene/CuAlMn composites with uniformly distributed polystyrene were successfully fabricated via sintering-dissolution and sol–gel methods. Properties tests indicated that the porous CuAlMn SMAs had excellent compression energy absorption and damping properties. Compared with porous CuAlMn SMAs, polystyrene/CuAlMn composites had higher compression strength and damping capacity, which had been ascribed to the hindering effect of polystyrene on the collapse of pores and the superposition of multiple damping sources, respectively. The addition of mica or graphite sheets in polystyrene could remarkably improve the elastic modulus, damping as well as storage modulus of the polystyrene/CuAlMn composites. The associated mechanisms were discussed.

通过烧结-溶解和溶胶-凝胶法成功地制造了具有连通孔的新型多孔CuAlMn形状记忆合金（SMAs）和具有均匀分布的聚苯乙烯的聚苯乙烯/ CuAlMn复合材料。性能测试表明，多孔CuAlMn SMAs具有优异的压缩能量吸收和阻尼性能。与多孔CuAlMn SMA相比，聚苯乙烯/ CuAlMn复合材料具有更高的抗压强度和阻尼能力，这分别归因于聚苯乙烯对孔隙塌陷和多种阻尼源叠加的阻碍作用。在聚苯乙烯中添加云母或石墨片可以显着改善聚苯乙烯/ CuAlMn复合材料的弹性模量，阻尼以及储能模量。讨论了相关的机制。