Results 31 to 40 of about 650,474 (282)

Tensile Properties of the Subsurface and Center Regions of AA6111 Direct-Chill-Cast Ingot in Semisolid State and Their Hot Tearing Susceptibility

open access: yesEngineering Proceedings, 2023
AA6111 alloys are widely used in the automotive industry owing to their high strength/weight ratio, good corrosion resistance, and reasonable formability.
Mohamed Qassem   +3 more
doaj   +1 more source

Application of the Rappaz-Drezet-Gremaud Hot Tearing Criterion to Welding of Aluminium Alloys [PDF]

open access: yes
Hot tearing, a severe defect occurring during solidification is the conjunction of tensile stresses which are transmitted to the mushy zone by the coherent solid underneath and of insufficient liquid feeding to compensate for the volumetric change.
Allehaux, D., Drezet, J.-M.
core   +2 more sources

Modeling of Stress, Distortion, and Hot Tearing [PDF]

open access: yes, 2008
Abstract This article summarizes some of the issues and approaches in performing computational analyses of mechanical behavior, distortion, and hot tearing during solidification. It presents the governing equations and describes the methods used to solve them.
Thomas, Brian G., Bellet, Michel
openaire   +1 more source

Study of Hot Tearing in Cast and Wrought Aluminum Alloys

open access: yes, 2012
During the solidification process in casting, hot tearing may occur. It is a severe defect that normally involves the formation of a macroscopic tear, which generates cracks either on the surface or inside the casting.
Wu, Qinxin
core   +3 more sources

Microstructural characterisation related to hot tearing of Al-Cu sand mould castings

open access: yesFracture and Structural Integrity, 2013
In this paper, the hot tearing behaviour in Al-(4.8?6)%Cu sand mould castings was preliminary investigated by means of microstructural examination and image analysis.
M. Merlin
doaj   +3 more sources

Study of the Properties of the AlSi9Cu3 Alloy Depending on the Ratio of Returnable Material in the Batch [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
Recycling of aluminium returnable material through its reuse is now an essential component of the production of aluminium alloy castings. The main goal is to find a suitable ratio of the primary alloy and the returnable material in the batch, thus ...
M. Matejka   +2 more
doaj   +1 more source

Hot Tearing Evaluation of Al-0.9Mg-0.7Si Aluminium-cast Alloy [PDF]

open access: yesArchives of Foundry Engineering
This study aimed to evaluate the hot tearing susceptibility (HTS) of the Al-0.9Mg-0.7Si aluminium casting alloy, with a particular focus on how cooling rates and thermal stresses during solidification influence this phenomenon.
Z. Zulfadhli   +6 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

open access: yesFEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt   +8 more
wiley   +1 more source

Artificial molecular machines and motors—Design and control of nanoscale motion

open access: yesFEBS Letters, EarlyView.
Molecules are constantly moving because of thermal fluctuations, but random motion alone cannot be exploited to perform directional tasks. Artificial molecular machines use chemical, electrical, or light energy to bias this motion. Molecular shuttles, rotary motors, and supramolecular pumps illustrate how nanoscale movement can be controlled and ...
Leonardo Andreoni, Alberto Credi
wiley   +1 more source

A New Approach to Determine Tensile Stress-Strain Evolution in Semi-Solid State at Near-Solidus Temperature of Aluminum Alloys

open access: yesMetals, 2021
Accurate determination of the materials’ strength and ductility in the semi-solid state at near-solidus temperatures is essential, but it remains a challenging task. This study aimed to develop a new method to determine the stress-strain evolution in the
Jovid Rakhmonov   +6 more
doaj   +1 more source

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