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Effect of Cold Deformation on the Microstructural and Property Uniformity of AlO/Cu Composites.
Materials (Basel)
December 2024
School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China.
Copper matrix composites (Cu-MCs) have garnered significant attention due to their exceptional electrical, wear-resistant, and mechanical properties. Among them, AlO/Cu composites, reinforced with AlO, are a focal point in the field of high-strength, high-conductivity copper alloys, owing to their high strength, excellent electrical conductivity, and superior resistance to high-temperature softening. Cold deformation is an effective method for enhancing the mechanical properties of AlO/Cu composites.
View Article and Find Full Text PDFMorphometric analysis of the C1-2 zygapophysial joint in atlantoaxial dislocation patients with sandwich fusion of the craniovertebral junction.
Neurosurg Rev
January 2025
Department of Orthopaedics, Peking University Third Hospital, Beijing, China.
The combination of congenital C1 occipitalization and C2-3 non-segmentation (i.e. "sandwich fusion") results in early development of atlantoaxial dislocation (AAD).
View Article and Find Full Text PDFDebridement Technique for Single-Stage Revision Shoulder Arthroplasty.
JBJS Essent Surg Tech
January 2025
Shoulder and Elbow Service, Florida Orthopaedic Institute, Tampa, Florida.
Background: The incidence of revision shoulder arthroplasty continues to rise, and infection is a common indication for revision surgery. Treatment of periprosthetic joint infection (PJI) in the shoulder remains a controversial topic, with the literature reporting varying methodologies, including the use of debridement and implant retention, single-stage and 2-stage surgeries, antibiotic spacers, and resection arthroplasty. Single-stage revision has been shown to have a low rate of recurrent infection, making it more favorable because it precludes the morbidity of a 2-stage operation.
View Article and Find Full Text PDFStrong, ductile, and hierarchical hetero-lamellar-structured alloys through microstructural inheritance and refinement.
Proc Natl Acad Sci U S A
January 2025
Department of Materials Science and Engineering, Hong Kong Institute for Advanced Study, City University of Hong Kong, Hong Kong, China.
The strength-ductility trade-off exists ubiquitously, especially in brittle intermetallic-containing multiple principal element alloys (MPEAs), where the intermetallic phases often induce premature failure leading to severe ductility reduction. Hierarchical heterogeneities represent a promising microstructural solution to achieve simultaneous strength-ductility enhancement. However, it remains fundamentally challenging to tailor hierarchical heterostructures using conventional methods, which often rely on costly and time-consuming processing.
View Article and Find Full Text PDFApplication of additive manufacturing TaBw01 porous tantalum rod in ARCO stage II osteonecrosis of the femoral head.
J Orthop Surg Res
December 2024
Center for Joint Surgery, Southwest Hospital, Army Medical University, Gaotanyan Street, Shapingba District, Chongqing, 400038, China.
Purpose: This study aims to investigate the suitable surgical strategies for applying TaBw01 porous tantalum rod across different stages of osteonecrosis of the femoral head (ONFH).
Methods: TaBw01 tantalum rods were fabricated using type FTaY-1 tantalum powder via the foam impregnation-sintering method. Mechanical testing with the Instron 8801 universal testing machine and finite element analysis (FEA) assessed single tantalum rod implantation and impaction bone grafting combined with rod implantation.
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