Dan Shechtman
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View article: Enhanced age-hardening and formation of plate precipitates in Mg-Gd-Ag-Al alloy fabricated by wire-arc additive manufacturing
Enhanced age-hardening and formation of plate precipitates in Mg-Gd-Ag-Al alloy fabricated by wire-arc additive manufacturing Open
In this work, the microstructure of the WAAM-fabricated Mg-12.1Gd-1.6Ag-0.7Al (wt.%) alloy featured a distinct lamellar structure with alternating dendrites and equiaxed grains. The second phase contained MgAg, GdH 2, (Mg, Ag) 5 Gd and Al …
View article: Effect of Electropulsing Current Density on the Strength–Ductility Synergy of Extruded Mg-6Al-1Zn Alloy
Effect of Electropulsing Current Density on the Strength–Ductility Synergy of Extruded Mg-6Al-1Zn Alloy Open
The difficulty in enhancing both tensile strength and ductility is limiting the development of high-performance Mg alloys. The “plastic deformation + electropulsing (EP) treatment” is an effective process for modifying the microstructure a…
View article: Simulated Body Fluid-Assisted Stress Corrosion Cracking of a Rapidly Solidified Magnesium Alloy RS66
Simulated Body Fluid-Assisted Stress Corrosion Cracking of a Rapidly Solidified Magnesium Alloy RS66 Open
This study investigated the simulated body fluid-assisted stress corrosion cracking (SCC) of an Al-free magnesium alloy (RS66) and a common Al-containing magnesium alloy (AZ91), the former being more suitable for temporary implant applicat…
View article: Dissolving magnesium hydroxide implants enhance mainly cancellous bone formation whereas degrading RS66 implants lead to prominent periosteal bone formation in rabbits
Dissolving magnesium hydroxide implants enhance mainly cancellous bone formation whereas degrading RS66 implants lead to prominent periosteal bone formation in rabbits Open
Bone fractures often require internal fixation using plates or screws. Normally, these devices are made of permanent metals like titanium providing necessary strength and biocompatibility. However, they can also cause long-term complicatio…
View article: Customized heat treatment process enabled excellent mechanical properties in wire arc additively manufactured Mg-RE-Zn-Zr alloys
Customized heat treatment process enabled excellent mechanical properties in wire arc additively manufactured Mg-RE-Zn-Zr alloys Open
Customized heat treatment is essential for enhancing the mechanical properties of additively manufactured metallic materials, especially for alloys with complex phase constituents and heterogenous microstructure. However, the interrelated …
View article: Microstructure and properties of LZQT600-3 HCCDIBs for plunger pump cylinder
Microstructure and properties of LZQT600-3 HCCDIBs for plunger pump cylinder Open
It is important to improve the comprehensive performance of the ductile iron bars (DIBs) for the cylinder block of the extra high pressure hydraulic plunger pump and accelerate the industrial application. In this work, the LZQT600-3 DIBs w…
View article: Microstructural evolution and mechanical properties of Mg-8.1Gd-2.6Y-0.7Zn-0.5Zr alloy by multi-layer wire arc additive manufacturing
Microstructural evolution and mechanical properties of Mg-8.1Gd-2.6Y-0.7Zn-0.5Zr alloy by multi-layer wire arc additive manufacturing Open
Wire arc additive manufacturing (WAAM) of Mg-RE (rare-earth)-Zn alloys is important for meeting the requirements of lightweight large-scale components with high manufacturing flexibility. The Mg-8.1Gd-2.6Y-0.7Zn-0.5Zr (GWZ831K, wt.%) alloy…
View article: Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism
Additive manufacturing of magnesium and its alloys: process-formability-microstructure-performance relationship and underlying mechanism Open
Highlights The process-formability-microstructure-performance relationship in additively manufactured Mg and its alloys was reviewed. The underlying mechanisms behind defect formation, microstructure evolution and performance improvement w…
View article: Microstructure evolution and mechanical properties of wire arc additively manufactured Mg-Gd-Y-Zr alloy by post heat treatments
Microstructure evolution and mechanical properties of wire arc additively manufactured Mg-Gd-Y-Zr alloy by post heat treatments Open
A detailed and systematic investigation on the effect post heat treatment has on the microstructure evolution and the resultant mechanical properties of the wire arc additive manufacturing processed Mg-5.9Gd-2.8Y-0.7Zr alloy is conducted i…
View article: Teaching computing for complex problems in civil engineering and geosciences using big data and machine learning: synergizing four different computing paradigms and four different management domains
Teaching computing for complex problems in civil engineering and geosciences using big data and machine learning: synergizing four different computing paradigms and four different management domains Open
This article describes a teaching strategy that synergizes computing and management, aimed at the running of complex projects in industry and academia, in the areas of civil engineering, physics, geosciences, and a number of other related …
View article: Enhanced strength-ductility synergy in a wire and arc additively manufactured Mg alloy via tuning interlayer dwell time
Enhanced strength-ductility synergy in a wire and arc additively manufactured Mg alloy via tuning interlayer dwell time Open
Strength-ductility trade-off is a common issue in Mg alloys. This work proposed that a synergistic enhancement of strength and ductility could be achieved through tuning interlayer dwell time (IDT) in the wire and arc additive manufacturin…
View article: Quasi-Crystal, Not Quasi-Scientist
Quasi-Crystal, Not Quasi-Scientist Open
Materials science investigates the structure and properties of different materials. One of these materials is the crystal. Crystals are solid materials with building blocks (atoms, ions, or molecules) that are arranged in a highly organize…
View article: Microstructure and properties of ductile iron bars for plunger pump prepared by horizontal continuous casting process
Microstructure and properties of ductile iron bars for plunger pump prepared by horizontal continuous casting process Open
Ductile iron bars (DIBs) with a diameter of 145 mm, used for plunger pump production, were made by the horizontal continuous casting (HCC). The microstructure of the samples cut at three locations with different distances away from the sur…