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Showing 1–3 of 3 results
Advanced filters: Author: Konda G Prashanth Clear advanced filters

  • A submicron structure strategy was introduced in a selective laser melted (SLM) Ag-Cu-Ge alloy, showing semi-coherent precipitates distributed in a discontinuous but periodic fashion along the cellular boundaries. It leads to a remarkable strength of ~410 MPa with ~16% ductility, well surpassing the strength-ductility combination of their cast counterparts. The hierarchal SLM microstructure and high density of internal defects leading to a high strain hardening rate and strong strengthening. Premature failure occurred due to the external defects, such as pores and unmelted particles. This work paves a way for additively manufacturing materials towards high strength–ductility synergy.

    • Zhi Wang
    • Meishen Xie
    • Konda Gokuldoss Prashanth
    ResearchOpen Access
    NPG Asia Materials
    Volume: 12, P: 1-10

  • We report a bulk hybrid nanostructured Al alloy with super-high strength at both room and elevated temperatures. The strengthening mechanisms were clearly elucidated, which are mainly attributed to the composite structure and confinement effect between the nano phases. The confining effect can effectively suppress the premature brittle fracture of the nano-intermetallic phases. The microstructural strategy and strengthening mechanisms in this work may be beneficial for the scientific community in understanding and designing high-strength materials.

    • Zhi Wang
    • Rui T Qu
    • Jürgen Eckert
    ResearchOpen Access
    NPG Asia Materials
    Volume: 7, P: e229