Nano‐Dual‐Phase Metallic Glass Film Enhances Strength and Ductility of a Gradient Nanograined Magnesium Alloy

This work is to study the influence of heat treatment on microstrudture and mechanical properties of AZ31B magnesium alloy prepared by solid -state recycling. AZ31B magnesium alloy chips were recycled by hot extruding. Three different heat treatments were conducted for recycled alloy. Mechanical properties and microstructure of the recycled specimen and heat treated specimen were investigated. 300°C×2h annealing specimen exhibits finer grain due to static recrystallization, and microstructure of 400°C×2h annealing specimen becomes more coarse. 300°C×2h annealing treatment improves obviously strength and ductility of recycled alloy. Ultimate tensile strength of alloy decreases and elongation to failure increases after 400°C×2h annealing. Grain size, dislocation density and bonding of chips have an effect on the elongation of recycled materials. 190°C×8h ageing has no influence on microstructure and mechanical properties of recycled alloy.

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Development of Novel Lightweight Dual-Phase Al-Ti-Cr-Mn-V Medium-Entropy Alloys with High Strength and Ductility

Entropy ◽

10.3390/e22010074 ◽

2020 ◽

Vol 22 (1) ◽

pp. 74

Author(s):

Yu-Chin Liao ◽

Po-Sung Chen ◽

Chao-Hsiu Li ◽

Pei-Hua Tsai ◽

Jason Jang ◽

...

Keyword(s):

Compression Strength ◽

High Strength ◽

Alloy System ◽

Dual Phase ◽

Face Centered Cubic ◽

Compression Tests ◽

Arc Melting ◽

Face Centered ◽

Fcc Phase ◽

Strength And Ductility

A novel lightweight Al-Ti-Cr-Mn-V medium-entropy alloy (MEA) system was developed using a nonequiatiomic approach and alloys were produced through arc melting and drop casting. These alloys comprised a body-centered cubic (BCC) and face-centered cubic (FCC) dual phase with a density of approximately 4.5 g/cm3. However, the fraction of the BCC phase and morphology of the FCC phase can be controlled by incorporating other elements. The results of compression tests indicated that these Al-Ti-Cr-Mn-V alloys exhibited a prominent compression strength (~1940 MPa) and ductility (~30%). Moreover, homogenized samples maintained a high compression strength of 1900 MPa and similar ductility (30%). Due to the high specific compressive strength (0.433 GPa·g/cm3) and excellent combination of strength and ductility, the cast lightweight Al-Ti-Cr-Mn-V MEAs are a promising alloy system for application in transportation and energy industries.

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Electron beam induced rejuvenation in a metallic glass film during in-situ TEM tensile straining

Acta Materialia ◽

10.1016/j.actamat.2019.09.033 ◽

2019 ◽

Vol 181 ◽

pp. 148-159 ◽

Cited By ~ 1

Author(s):

Christian Ebner ◽

Jagannathan Rajagopalan ◽

Christina Lekka ◽

Christian Rentenberger

Keyword(s):

Electron Beam ◽

Metallic Glass ◽

In Situ Tem ◽

Glass Film

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Simultaneous Enhancement of Tensile/Compressive Strength and Ductility of Magnesium Alloy AZ31 Using Carbon Nanotubes

Journal of Nanoscience and Nanotechnology ◽

10.1166/jnn.2010.1809 ◽

2010 ◽

Vol 10 (2) ◽

pp. 956-964 ◽

Cited By ~ 57

Author(s):

M. Paramsothy ◽

S. F. Hassan ◽

N. Srikanth ◽

M. Gupta

Keyword(s):

Carbon Nanotubes ◽

Compressive Strength ◽

Magnesium Alloy ◽

Alloy Az31 ◽

Magnesium Alloy Az31 ◽

Strength And Ductility

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A Ti/Ti-Based-Metallic-Glass Interpenetrating Phase Composite with Remarkable Mutual Reinforcement Effect

Advances in Materials Science and Engineering ◽

10.1155/2014/127172 ◽

2014 ◽

Vol 2014 ◽

pp. 1-6

Author(s):

J. Mu ◽

Z. W. Zhu ◽

H. F. Zhang ◽

H. W. Zhang ◽

H. M. Fu ◽

...

Keyword(s):

Shear Band ◽

Metallic Glass ◽

Phase Structure ◽

High Strength ◽

Reinforcement Effect ◽

Crystalline Phases ◽

Porous Ti ◽

Strength And Ductility

A Ti/Ti-based-metallic-glass interpenetrating phase composite (IPC) was prepared by infiltrating theTi34.3Zr31.5Ni5.5Cu5Be23.7melt into the porous Ti skeleton. Porous Ti limits the shear band (SB) propagation and promotes the SB multiplication, leading to the improved ductility. Moreover, the interpenetrating phase structure shows a mutual reinforcement effect for both amorphous and crystalline phases, making IPC possess higher strength than that calculated by the models held for the conventional composites. This finding will suggest a new way for preparing composites with high strength and ductility.

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