Daqiang Jiang
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View article: Enhanced superelasticity and notable elastocaloric effect of Cu71Al17.5Mn11.5 shape memory alloys by laser-based powder bed fusion
Enhanced superelasticity and notable elastocaloric effect of Cu71Al17.5Mn11.5 shape memory alloys by laser-based powder bed fusion Open
Cu-based shape memory alloys (SMAs) with highly oriented columnar grains and high densities are promising candidates for solid-state refrigeration. In this work, the Cu71Al17.5Mn11.5 alloys with a strong 〈001〉 texture columnar grains and a…
View article: Effects of Point Defects on the Monoclinic Angle of the B19″ Phase in NiTi-Based Shape Memory Alloys
Effects of Point Defects on the Monoclinic Angle of the B19″ Phase in NiTi-Based Shape Memory Alloys Open
This study investigated the effects of a variety of point defects on the monoclinic angle of the B19″ martensite in NiTi, including Ni and Ti vacancies, Ni–Ti anti-sites in the lattice, third element substitution, and Ni and Ti enrichments…
View article: Third element diffusion induced amorphization of NiTi in a NiTi-Nb nanocomposite
Third element diffusion induced amorphization of NiTi in a NiTi-Nb nanocomposite Open
The paper reports a unique and rare phenomenon observed in a NiTi-Nb nanowire in-situ composite system. The phenomenon is the amorphization of the B2 NiTi matrix caused by the diffusion of Nb through the B2 lattice. The diffusion of Nb thr…
View article: Unraveling the origin of local chemical ordering structure in Fe-based solid solutions
Unraveling the origin of local chemical ordering structure in Fe-based solid solutions Open
Local chemical order (LCO) can exert pronounced effects on both structural and functional properties, tailoring LCO domains at (sub-)nanoscale could offer an alternative material-design concept for yet unexplored performance. However, the …
View article: Elinvar effect in Ti50-xNi41Co9Nbx shape memory alloys
Elinvar effect in Ti50-xNi41Co9Nbx shape memory alloys Open
Based on the observation of Elinvar effect in non-magnetic Co doped TiNi alloys, we added a small amount of Nb to Ti50Ni41Co9 alloy with low Co content to regulate the phase transformation behaviors and induce Elinvar effect. The effects o…
View article: Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy
Negative temperature-dependence of stress-induced R→B19′ transformation in nanocrystalline NiTi alloy Open
The temperature dependence of the critical stress of R→B19’ transformation in NiTi shape memory alloys remains unclear due to the difficulties in precisely identifying the phase constitution and acquiring sole R phase. Here we investigate …
View article: 3D-Printing Damage-Tolerant Architected Metallic Materials with Shape Recoverability via Special Deformation Design of Constituent Material
3D-Printing Damage-Tolerant Architected Metallic Materials with Shape Recoverability via Special Deformation Design of Constituent Material Open
Architected metallic materials generally suffer from a serious engineering problem of mechanical instability manifested as the emergence of localized deformation bands and collapse of strength. They usually cannot exhibit satisfactory shap…
View article: Nanocrystalline strain glass TiNiPt and its superelastic behavior
Nanocrystalline strain glass TiNiPt and its superelastic behavior Open
TiNi-based shape-memory alloys are known to exhibit a strain glass state under certain conditions, generally in the presence of high-density defects such as excess solute atoms or alloying elements, dislocations, and nanoprecipitates. In t…
View article: Achieving ultra-large elastic strains in Nb thin films on NiTi phase-transforming substrate by the principle of lattice strain matching
Achieving ultra-large elastic strains in Nb thin films on NiTi phase-transforming substrate by the principle of lattice strain matching Open
Two-dimensional nanomaterials are able to sustain ultra-large elastic strains, which in turn hold potential to alter the many functional properties. However, to achieve such large elastic strains in macro-forms suitable for applications ha…