48Co1Mn37In14-xAlx (0≤x≤2)磁性形狀記憶合金顯微組織、晶體結構、馬氏體相變、力學性能和耐腐蝕性能的影響。結果表明：用Al替代部分In，合金的晶粒尺寸明顯減小，摻雜2at%的Al元素，平均晶粒尺寸縮小到10 μm左右，大約為未摻雜樣品的三十五分之一；當Al摻雜量在0.25at%~2at%時，金屬Al完全固溶到基體中，而且Al在合金中的固溶度隨摻雜量的增加有所提升，當Al摻雜量為2at%時，Al在基體中的固溶度接近2at%；隨著Al對In的取代，室溫下合金由L21立方奧氏體與單斜6M馬氏體的兩相結構轉變?yōu)閱我坏?M調制馬氏體相結構，晶胞體積逐漸減小，馬氏體相變溫度呈現(xiàn)上升趨勢；合金抗壓強度不斷增大，Ni48Co1Mn37In12Al2的抗壓縮斷裂強度與Ni48Co1Mn37In14相比提高了160%，壓縮應變也由5.46%增加到6.36%；適量的Al替代In后，合金在人工海水中的耐腐蝕性能總體呈現(xiàn)不斷增強的趨勢，Ni48Co1Mn37In12Al2合金的耐腐蝕性能明顯高于Ni48Co1Mn37In14合金，且其耐腐蝕性接近于304不銹鋼。;The effect of Al doping on microstructure, crystal structure, martensitic transformation, mechanical properties and corrosion resistance of Ni48Co1Mn37In14-xAlx (0≤x≤2) magnetic shape memory alloys was studied by the material preparation method of arc melting. The results show that the grain size of the alloy is reduced by replacing part of In with Al, and the average grain size is reduced to about 10 μm when 2at% Al element is doped, which is about 1/35 of that of the undoped sample. When the doping amount of Al is 0.25at%?2at%, the metal Al is completely dissolved into the matrix, and the solid solubility of Al in the alloy increases with the increase in the doping amount; when the doping amount is 2at%, the solid solubility of Al in the matrix is close to 2at%. With the substitution of Al for In, the alloy changes from the two-phase structure of L21 cubic austenite and monoclinic 6M martensite to a single 6M at room temperature, the unit cell volume gradually decreases, and the martensitic transformation temperature shows an upward trend. The compressive strength of the alloy continues to increase, and compared with that of Ni48Co1Mn37In14, the compressive fracture strength of Ni48Co1Mn37In12Al2 is increased by 160%, and the compressive strain also increases from 5.46% to 6.36%. After an appropriate amount of Al replacing In, the corrosion resistance of the alloy in artificial seawater generally shows an increasing trend. The corrosion resistance of Ni48Co1Mn37In12Al2 alloy is significantly higher than that of Ni48Co1Mn37In14 alloy, and its corrosion resistance is close to that of 304 stainless steel."/>