Microstructure and High Temperature Mechanical Property of Fe–Cr–B Based Metal/Ceramic Composite Manufactured by Metal Injection Molding Process

Lee, Kee‐Ahn; Gwon, Jin-Han; Yoon, Tae-Sik

doi:10.1007/s12540-018-0054-2

Cited by 3 publications

References 9 publications

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Evaluation of Dynamic Precipitation in Extruded Mg-Zn Alloy

Li¹,

Na²,

Chang³

et al. 2019

Korean J. Met. Mater.

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The dynamic precipitation evolution of Mg-3 wt% Zn alloy during extrusion was evaluated in this study. Precipitation evolution during aging has been well investigated for the Mg-Zn alloy, which is known as static precipitation. However, little attention has been given to dynamic precipitation in Mg-Zn alloy. In order to evaluate the dynamic precipitation evolution, Mg-3 wt% Zn alloy was prepared in an electrical resistance melting furnace and extruded at 180 o C by direct extrusion. The microstructure of the as-extruded Mg-3 wt% Zn alloy was investigated by Optical Microscopy (OM), Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM). A bi-modal crystal structure was observed after extrusion, which consisted of dynamically recrystallized (DRX) regions and deformed regions. The 2 nd phases that precipitated during the extrusion were distributed in the dynamically recrystallized regions. The precipitates were mainly Mg 7 Zn 3 phase, which is known as a metastable phase, and it was determined that the factor influencing the precipitates' formation and distribution during extrusion was dominantly dislocation. Also, the corresponding mechanical properties were investigated by measuring the Vickers hardness and compared with as-cast Mg-3 wt% Zn alloy after aging at 160 o C. The Vickers hardness of the as-extruded Mg-3 wt% Zn alloy was 81.5 HV, which was 36.7% higher than that of the as-cast one after aging at 160 o C. This was attributed to grain refinement and dynamic precipitation during severe plastic deformation.

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Evaluation of Dynamic Precipitation in Extruded Mg-Zn Alloy

Li¹,

Na²,

Chang³

et al. 2019

Korean J. Met. Mater.

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Effect of Fe-Cr-B on the Microstructure and Mechanical Properties of a Powder Injection Molding Processed Fe-Cr-B/316L Stainless Steel Matrix Composite

Kim¹,

Joo²,

Yoon³

et al. 2023

Korean J. Met. Mater.

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Stainless steel-based composites (SMCs) mixed with 316L stainless steel powder and Fe-Cr-B based M alloys powder ed M) powder were manufactured using the powder injection molding (PIM) process, and their microstructure and mechanical properties were investigated. To examine the effect of M content on the properties of SMCs, the M fraction was controlled to 30 vol.%, 50 vol.%, and 70 vol.%. It was observed that PIM-processed Fe-Cr-B/316L SMCs (30 vol.%, 50 vol.%, 70 vol.%) had γ-austenite and minor α-ferrite as a matrix, and (Cr, Fe)<sub>2</sub>B was formed as a reinforced phase. In tensile tests at room temperature, the yield strengths of the 30 vol.%, 50 vol.%, 70 vol.% M SMCs were measured to be 519.9 MPa, 574.1 MPa, and 604.8 MPa (peak stress), respectively. From the fracture surface observation results, it was found that the deformation behavior changed from the intergranular fracture of boride to intergranular fracture between the matrix and boride, as the M fraction increased. Based on the above results, the deformation and fracture mechanisms of novel Fe-Cr-B/316L SMCs are also discussed.

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Challenges in Adopting Artificial Intelligence (AI) in HRM Practices: A study on Bangladesh Perspective

Hossin

Ulfy

Ali

et al. 2021

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Microstructure and High Temperature Mechanical Property of Fe–Cr–B Based Metal/Ceramic Composite Manufactured by Metal Injection Molding Process

Cited by 3 publications

References 9 publications

Evaluation of Dynamic Precipitation in Extruded Mg-Zn Alloy

Evaluation of Dynamic Precipitation in Extruded Mg-Zn Alloy

Effect of Fe-Cr-B on the Microstructure and Mechanical Properties of a Powder Injection Molding Processed Fe-Cr-B/316L Stainless Steel Matrix Composite

Challenges in Adopting Artificial Intelligence (AI) in HRM Practices: A study on Bangladesh Perspective

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