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Featured researches published by Binhan Sun.


Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2018

Opposing and Driving Forces Associated with the Dynamic Transformation of Ti-6Al-4V

Baoqi Guo; S. L. Semiatin; Jiangtao Liang; Binhan Sun; John J. Jonas

The opposing and driving forces associated with dynamic transformation in Ti-6Al-4V are evaluated. It is shown that the stored energy is less than the opposing forces inhibiting transformation and insufficient to initiate the phenomenon. By contrast, the driving force derived from the net softening is greater than the opposing force and is responsible for initiating the reaction. This approach indicates that deformation reduces the transus temperature and leads to the formation of a thermodynamically metastable state.


Acta Biomaterialia | 2018

Bio-inspired and optimized interlocking features for strengthening metal/polymer interfaces in additively manufactured prostheses

Ammar A. Alsheghri; Omar Alageel; Mohamed A. Mezour; Binhan Sun; Stephen Yue; Faleh Tamimi; Jun Song

Biomedical and dental prostheses combining polymers with metals often suffer failure at the interface. The weak chemical bond between these two dissimilar materials can cause debonding and mechanical failure. This manuscript introduces a new mechanical interlocking technique to strengthen metal/polymer interfaces through optimized additively manufactured features on the metal surface. To reach an optimized design of interlocking features, we started with the bio-mimetic stress-induced material transformation (SMT) optimization method. The considered polymer and metal materials were cold-cured Poly(methyl methacrylate) (PMMA) and laser-sintered Cobalt-Chromium (Co-Cr), respectively. Optimal dimensions of the bio-inspired interlocking features were then determined by mesh adaptive direct search (MADS) algorithm combined with finite element analysis (FEA) and tensile experiments such that they provide the maximum interfacial tensile strength and stiffness while minimizing the stress in PMMA and the displacement of PMMA at the Co-Cr/PMMA interface. The SMT optimization process suggested a Y-shape as a more favorable design, which was similar to mangrove tree roots. Experiments confirmed that our optimized interlocking features increased the strength of the Co-Cr/PMMA interface from 2.3 MPa (flat interface) to 34.4 ± 1 MPa, which constitutes 85% of the tensile failure strength of PMMA (40.2 ± 1 MPa). STATEMENT OF SIGNIFICANCE: The objective of this study was to improve metal/polymer interfacial strength in dental and orthopedic prostheses. This was achieved by additive manufacturing of optimized interlocking features on metallic surfaces using laser-sintering. The interlocking design of the features, which was a Y-shape similar to the roots of mangrove trees, was inspired by a bio-memetic optimization algorithm. This interlocking design lowered the PMMA displacement at the Co-Cr/PMMA interface by 70%, enhanced the interfacial strength by more than 12%, and increased the stiffness by 18% compared with a conventional bead design, meanwhile no significant difference was found in the toughness of both designs.


Scripta Materialia | 2017

Discontinuous strain-induced martensite transformation related to the Portevin-Le Chatelier effect in a medium manganese steel

Binhan Sun; N. Vanderesse; Fateh Fazeli; Colin Scott; Jianqiang Chen; Philippe Bocher; M. Jahazi; Stephen Yue


Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2016

Microstructure Evolution of a Medium Manganese Steel During Thermomechanical Processing

Binhan Sun; Huseyin Aydin; Fateh Fazeli; Stephen Yue


Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2016

Phase Transformation Behavior of Medium Manganese Steels with 3 Wt Pct Aluminum and 3 Wt Pct Silicon During Intercritical Annealing

Binhan Sun; Fateh Fazeli; Colin Scott; Stephen Yue


Scripta Materialia | 2017

Critical role of strain partitioning and deformation twinning on cracking phenomenon occurring during cold rolling of two duplex medium manganese steels

Binhan Sun; Fateh Fazeli; Colin Scott; Xiaojun Yan; Zhiwei Liu; Xiaoyu Qin; Stephen Yue


Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2018

Reverse Transformation Behavior of Ti-6Al-4V After Deformation in the Two-Phase Region

Baoqi Guo; Clodualdo Aranas; Binhan Sun; Xiankun Ji; John J. Jonas


Acta Materialia | 2018

The influence of silicon additions on the deformation behavior of austenite-ferrite duplex medium manganese steels

Binhan Sun; Fateh Fazeli; Colin Scott; Nicolas Brodusch; Raynald Gauvin; Stephen Yue


Surface & Coatings Technology | 2017

Understanding the cold spray deposition efficiencies of 316L/Fe mixed powders by performing splat tests onto as-polished coatings

Xin Chu; Hanqing Che; Phuong Vo; Rohan Chakrabarty; Binhan Sun; Jun Song; Stephen Yue


Steel Research International | 2018

Effect of Grain Size and Residual Strain on the Dynamic Transformation of Austenite under Plate Rolling Conditions

Samuel F. Rodrigues; Clodualdo Aranas; Binhan Sun; Fulvio Siciliano; Stephen Yue; John J. Jonas

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Fateh Fazeli

Natural Resources Canada

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Colin Scott

Natural Resources Canada

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M. Jahazi

École de technologie supérieure

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