Jamie Joseph Kruzic

Factors controlling the residual stresses in laser powder bed fusion fabricated AlSi10Mg and Ti6Al4V

M. Rais A. Taufiq, Peidong He, Qian Liu, Zhuohan Cao et autres

Abstract Additive manufacturing processes such as laser powder bed fusion (LPBF) introduce residual stresses that can cause part distortion and reduced mechanical properties. LPBF process parameters are often selected to give high relative density and specific mechanical properties; however, it is not …

id, au (code pays fourni par la source)

Corrigendum to “The importance of fracture toughness evaluation for additively manufactured metals” [Acta Materialia 276 (2024) 120061]

Moses J. Paul, Jamie Joseph Kruzic, Upadrasta Ramamurty, Bernd Gludovatz

sg, au (code pays fourni par la source)

Correlations between Microstructure and Mechanical Properties for Laser Powder Bed Fusion Fabricated Ta/Fe–Mn-Si Metal Matrix Composites Revealed by Machine Learning

Zi Li, Zhuohan Cao, Zuhao Zhang, Michael Ferry et autres

Abstract Metal matrix composites (MMCs) offer a promising strategy to enhance the mechanical and functional properties of metals by tailoring reinforcement phases and microstructures. This study investigates the correlation between microstructural features and mechanical properties of Ta-reinforced Fe–Mn-Si MMCs fabricated by laser …

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Effect of melt pool interference modes on mesostructure and microstructure of laser powder bed fusion fabricated Ti-6Al-4V alloy

Zhuohan Cao, Yi Liu, Jingyuan Shen, Zi Li et autres

Melt pool is a critical meso-structural feature inherent to laser powder bed fusion (LPBF) process. However, there is less understanding about the interference among adjacent melt pools and its impact on the LPBF fabricated materials. This study focuses on two distinct melt …

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Multi-objective surrogate-assisted calibration of CPFEM models using macroscopic response and in situ EBSD measurements of grain reorientation trajectories

Jin‐Su Choi, Ondrej Muránsky, Mark Christian Messner, Tao Wei et autres

Crystal plasticity finite element method (CPFEM) models are widely used to simulate the deformation behaviour of polycrystalline materials, but their calibration is often limited by their high computational cost and the non-convexity of the optimisation landscape. This study develops a multi-objective surrogate-assisted …

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Improved anisotropic elastic properties evaluation of cancellous bone using novel experimental and image-based fabric tensor analysis

Jiapeng He, Guowei Zhou, Yiwei Xie, Zhuohan Cao et autres

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Revealing Nanoscale Solute‐Rich Clusters in Bulk Metallic Glasses by Atom Probe Tomography

Keita Nomoto, Huma Bilal, Bosong Li, Bernd Gludovatz et autres

Bulk metallic glasses (BMGs) exhibit excellent mechanical properties due to their lack of long-range atomic ordering. However, understanding their structure-property relationships remains an unresolved challenge since traditional characterization methods have been unable to reveal the 3D nanostructures that control mechanical properties. In …

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Significant enhancement of room-temperature shape recovery properties of Ta-modified Fe-Mn-Si shape memory alloys fabricated by laser powder bed fusion

Zhuohan Cao, Qian Liu, Wenliang Chen, Zuhao Zhang et autres

In this study, fully dense and crack-free Fe-30Mn-6Si-xTa (x = 0, 0.5, 1.0, 2.0 wt%) shape memory alloys (SMAs) were manufactured by laser powder bed fusion (LPBF). The effects of tantalum (Ta) addition and post-heat treatment (600 °C for 30 min) on …

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Multi-objective calibration of elastic-viscoplastic models to capture the elevated-temperature creep and tensile behaviour of alloy 617

Jae Hwan Choi, Ondrej Muránsky, Mark Christian Messner, Jamie Joseph Kruzic et autres

High-temperature engineering systems are expected to operate under sustained thermal and mechanical loads while also undergoing repeated thermal transients. Consequently, it is essential to develop material models capable of accurately predicting behaviour under a range of loading and temperature conditions. This study …

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Inelastic and fracture behaviour of nuclear graphite

K. Irman, E.A. Flores‐Johnson, Jamie Joseph Kruzic, William E Windes et autres

• Nuclear graphite grades IG-110, NBG-18 and PCEA were investigated. • Uniaxial compression and splitting tensile tests were performed. • Fine-grained IG-110 graphite has the optimal combination of strength and ductility. • FE simulations using the concrete damaged plasticity (CDP) material model …

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Impact of micro and mesostructure on the fatigue crack growth in laser powder bed fusion fabricated AlSi10Mg

Moses J. Paul, Qian Liu, Xiaopeng Li, Jamie Joseph Kruzic et autres

Fatigue crack propagation in additive manufactured materials is often impacted by defects such as pores or lack of fusion and extensive research has been conducted to control pore formation and minimize their effect on fatigue life. The impact of process parameters on …

sg, au (code pays fourni par la source)

Stretch activated molecule immobilization in disulfide linked double network hydrogels

Yuwan Huang, Zihao Li, Chavinya D. Ranaweera, Pavithra Bhakthi Jayathilaka et autres

Inspired by how forces facilitate molecule immobilization in biological tissues to provide localized functionalization, tough hydrogel networks with stretch activated mechanochemistry are developed by utilizing disulfide bonds as dynamic covalent crosslinks. Specifically, disulfide linked polyethylene glycol hydrogels are reinforced with a second …

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