Journal: Journal of Alloys and Compounds

Abbreviation

J. alloys compd.

Publisher

Elsevier

Journal Volumes

ISSN

0925-8388
1873-4669

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Publications 1 - 10 of 79
  • Experimental study and thermodynamic description of the Au–Cu–Ge system
    Item type: Journal Article
    Jin, Shan; Duarte, Liliana I.; Leinenbach, Christian (2014)
    Journal of Alloys and Compounds
  • Thermodynamic assessment of the Mn–Y–O system
    Item type: Journal Article
    Chen, Ming; Hallstedt, Bengt; Gauckler, Ludwig J. (2005)
    Journal of Alloys and Compounds
  • Enhanced homogeneous dispersoid precipitation by adding Si and Cr in an Al-Mg-Mn alloy
    Item type: Journal Article
    Gao , Jieming; Wei , Wu; Shi , Wei; et al. (2025)
    Journal of Alloys and Compounds
    For deformation-strengthened Al-Mg-Mn alloys, regulating the precipitation of Mn-rich dispersoids and ensuring their uniform distribution is conducive to improving recrystallization resistance and mechanical properties. This work investigates the effects of Si, Cr and heat treatment on the formation and distribution of Mn-rich dispersoids inAl - 4.0 wt% Mg - 0.8 wt% Mn alloy, as well as the relationship between microstructure and mechanical properties. The results indicate that the optimal double-stage heat treatment (DH) parameters for the precipitation of Mn-rich dispersoids are 280 °C / 12 h + 375 °C / 48 h. After the triple-stage heat treatment (TH) of 280 °C / 12 h + 375 °C / 48 h + 450 °C / 12 h, the area fraction of dispersoids free zone (DFZ) in 0.1 wt% Si alloy was significantly reduced compared to the base alloy. However, further increasing the Si content does not significantly reduce the DFZ, which is due to the consumption of a part of Si by the Mg2Si primary phase and the micro-segregation of Si in the as-cast alloy (the equilibrium distribution coefficient of Si is much less than 1). In the alloy containing 0.2 wt% Si and 0.2 wt% Cr, the Mn-rich dispersoids were uniformly distributed in the whole dendrite due to the opposite equilibrium distribution coefficients of Mn and Cr. Therefore, after hot-rolled and annealing heat treatment, the alloy with 0.2 wt% Si and 0.2 wt% Cr exhibits excellent mechanical properties, which are manifested as ultimate tensile strength of 327.0 MPa, yield strength of 199.0 MPa, and elongation of 14.0 %. Compared with the sparsely distributed Mn-rich dispersoids in the base alloy, the uniform distribution Mn-rich dispersoids and the smaller average spacing in the 0.2 wt% Si and 0.2 wt% Cr alloys enhance the hindrance to the movement of dislocations during the tensile process and improve the Portevin-Le Chatelier (PLC) effect of the alloy.
  • Formation mechanism of Cu2ZnSnSe4 absorber layers during selenization of solution deposited metal precursors
    Item type: Journal Article
    Fella, Carolin M.; Uhl, Alexander R.; Hammond, Ceri; et al. (2013)
    Journal of Alloys and Compounds
  • Superconductivity in thermally annealed Ta-Nb-Hf-Zr- Ti high-entropy alloys
    Item type: Journal Article
    Vrtnik, Stanislav; Koželj, P.; Meden, Anton; et al. (2017)
    Journal of Alloys and Compounds
  • Emergence of superconductivity in single-crystalline LaFeAsO under simultaneous Sm and P substitution
    Item type: Journal Article
    Zhigadlo, Nikolai D.; Puzniak, Roman; Moll, Philip J.W.; et al. (2023)
    Journal of Alloys and Compounds
    We report on the high-pressure growth, structural characterization, and investigation of the electronic properties of single-crystalline LaFeAsO co-substituted by Sm and P, in both its normal- and superconducting states. Here, the appearance of superconductivity is attributed to the inner chemical pressure induced by the smaller-size isovalent substituents. X-ray structural refinements show that the partial substitution of La by Sm and As by P in the parent LaFeAsO compound leads to a contraction in both the conducting Fe₂(As,P)₂ layers and the interlayer spacing. The main parameters of the superconducting state, including the critical temperature, the lower- and upper critical fields, as well as the coherence length, the penetration depth, and their anisotropy, were determined from magnetometry measurements on a single-crystalline La₀.₈₇Sm₀.₁₃FeAs₀.₉₁P₀.₀₉O sample. The critical current density (jc), as resulting from loops of magnetization hysteresis in the self-generated magnetic field, is 2 × 10⁶ A/cm² at 2 K. Overall, our findings illustrate a rare and interesting case of how superconductivity can be induced by co-substitution in the 1111 family. Such approach delineates new possibilities in the creation of superconductors by design, thus stimulating the exploration of related systems under multi-chemical pressure conditions.
  • Laser powder bed fusion of AlSi10Mg-based composites with graphene and nanodiamond additions
    Item type: Journal Article
    Spierings, Adriaan B.; Ozherelkov, Dimitry Yu.; Kneubühler, Fabian; et al. (2023)
    Journal of Alloys and Compounds
    Laser powder bed fusion (LPBF) processing of aluminum matrix composites (AMC) with blends of AlSi10Mg powder and nanodiamond and graphene additives was investigated. AMC with 0.5 wt% nanodiamonds addition was prepared by mechanical mixing, while AMC with 0.5 wt% of multi-layered graphene was prepared by electrochemical deposition. Initial powders for LPBF were thoroughly characterized and optimal LPBF parameters were found based on the relative density analysis and optical microscopy. Processing windows of both AMCs moved towards lower energy density possibly due to the increased total absorptivity of the powders. Raman spectroscopy results, SEM and HRTEM studies of samples after LPBF demonstrated the absence of nano-diamond in the structure after processing which is explained by graphitization of the nanodiamond particles during laser melting. In case of AMC with graphene additives, carbon-containing particles remained in the structure with partial in situ formation of Al₄C₃, along with a noticeable strengthening effect, which increased material’s microhardness by more than 40% compared to the initial AlSi10Mg alloy. The strengthening effect is explained by the presence of a network of graphene and Al₄C₃ particles across the solidified melt-pool promoting the Orowan strengthening mechanism.
  • In situ resistivity measurements of Cu-In thin films during their selenization
    Item type: Journal Article
    Kurdesau, F.; Kaelin, M.; Zalesski, V.B.; et al. (2004)
    Journal of Alloys and Compounds
  • Deuterium site energy difference in ZrTi2D4.3 as studied by high-temperature neutron diffraction
    Item type: Journal Article
    Tokaychuka, Y.; Keller, L.; Yvon, K. (2005)
    Journal of Alloys and Compounds
  • Tuning the glass forming ability and mechanical properties of Ti-based bulk metallic glasses by Ga additions
    Item type: Journal Article
    Bera, Supriya; Ramasamy, Parthiban; Şopu, Daniel; et al. (2019)
    Journal of Alloys and Compounds
Publications 1 - 10 of 79