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000646290 1001_ $$00000-0002-1602-3317$$aFelice, Igor O.$$b0
000646290 245__ $$aArc-based additive manufacturing of Cu-Al-Mn shape memory alloys: microstructure, tensile behavior and superelastic properties
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000646290 520__ $$aCu-based shape memory alloys (SMA) are a class of materials with high potential industry adoption due to theirintrinsic shape memory and superelastic properties. The application of this material has been studied for years inthe as-cast and heat treated conditions. Additive Manufacturing (AM) of these alloys is only sparsely reported forlaser powder bed fusion with no reports for the successful application of high deposition rate processes, such asarc-based ones, found in the literature. Thus, this work presents, for the first time, the successful fabrication ofCu-17Al-11.4Mn (at. %) SMA components via arc-based additive manufacturing using a gas metal arc weldingsystem. The deposition process yielded a structurally defect-free wall with homogeneous microstructure. Opticaland electron microscopy, and synchrotron X-ray diffraction confirmed the presence of columnar grainsmorphology due to the associated thermal cycling effects, and a primarily FCC phase. Tensile tests in bothhorizontal and vertical directions showed high strength and ductility with minimal anisotropy, while superelasticcyclic testing revealed stable hysteresis behavior up to 100 load-unload cycles, indicating high functional fatigueresistance. Further, a stress-induced transformation observed via in situ synchrotron X-ray diffraction duringtensile loading underscores the material’s suitability for superelastic applications. The present findingsdemonstrate the feasibility and advantages of employing arc-based additive manufacturing for processing CubasedSMA, opening new pathways for cost-effective fabrication of functional components.
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000646290 7001_ $$0P:(DE-H253)PIP1092879$$aShen, Jiajia$$b1
000646290 7001_ $$0P:(DE-HGF)0$$aSerrati, Douglas M.$$b2
000646290 7001_ $$00000-0001-9174-0239$$aOmori, Toshihiro$$b3
000646290 7001_ $$0P:(DE-H253)PIP1005745$$aSchell, Norbert$$b4
000646290 7001_ $$00000-0001-9072-5010$$aSantos, Telmo G.$$b5
000646290 7001_ $$0P:(DE-H253)PIP1018061$$aOliveira, J. P.$$b6
000646290 773__ $$0PERI:(DE-600)2012154-4$$a10.1016/j.msea.2026.149923$$gVol. 957, p. 149923 -$$n149923$$p1-16$$tMaterials science & engineering / A$$v957$$x0921-5093$$y2026
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