Results 41 to 50 of about 232 (143)

Peak microhardness recovery via T6 heat treatment with extremely soft annealed Al7075 feedstock in additive friction stir deposition

Journal of Materials Research and Technology
With standard T6 heat treatments, precipitate-hardened alloys such as Al7075 and Al6061 fabricated using Additive Friction Stir Deposition (AFSD) method restore to noticeablely different peak mechanical properties.
Huan Ding, Uttam Bhandari, Pengcheng Zhu, Ehsan Bagheri, Saeid Zavari, Yehong Chen, Yang Mu, Yongqiang Wang, Shengmin Guo   +8 more
doaj   +1 more source

On the (almost) stochastic dominance of cryptocurrency factor portfolios and implications for cryptocurrency asset pricing

European Financial Management, Volume 30, Issue 3, Page 1125-1164, June 2024.
Abstract Cryptocurrency returns are highly nonnormal, casting doubt on the standard performance metrics. We apply almost stochastic dominance, which does not require any assumption about the return distribution or degree of risk aversion. From 29 long–short cryptocurrency factor portfolios, we find eight that dominate our four benchmarks. Their returns
Weihao Han, David Newton, Emmanouil Platanakis, Charles Sutcliffe, Xiaoxia Ye   +4 more
wiley   +1 more source

An activity-based parametric cost analysis for upcycling machining chips to produce feedstock for sustainable additive friction stir deposition

Additive Manufacturing Letters
With the growing emphasis on supply chain resilience and efficiency, manufacturers are increasingly exploring sustainable material reuse strategies. One promising approach is the upcycling of machining chips into usable feedstock for additive friction ...
Sweta Baruah, Joshua Hoekstra, Tony Schmitz   +2 more
doaj   +1 more source

Microstructure and mechanical properties of Ti6Al4V alloys fabricated by additive friction stir deposition

Additive Manufacturing Letters, 2022
The additive friction stir deposition (AFSD) of Ti6Al4V alloy was successfully performed over a wide processing window. The microstructures were examined based on the high atemperature β grain size, grain boundary α formation and the propensity of ...
Ehsan Farabi, Steven Babaniaris, Matthew R. Barnett, Daniel M. Fabijanic   +3 more
doaj   +1 more source

Elucidating the Effects of Material Flow from Deposition Offset on AFSD Repair of AA7050

Metals
In this work, the effects of tool bias as a processing parameter on an additive friction stir deposition repair of AA7050-T7451 plates were investigated. In this study, the asymmetrical material flow effect was assessed by subjecting a machined groove plate to different tool biases during the AFSD process.
Victor A. Rojas, Ismael Y. Hidalgo, Khaled Matalgah, Trevor J. Fleck, Luke N. Brewer, Gregory W. Kubacki, J. Brian Jordon, Paul G. Allison   +7 more
openaire   +2 more sources

Heat treatment effects on microstructure, deformation mechanisms and mechanical response in additive friction stir deposited Mg-Gd-Y-Zr alloy

Journal of Magnesium and Alloys
Additive friction stir deposition (AFSD), as a solid-state-additive manufacturing technique with a high deposition rate, provides an innovative route for fabricating high-performance magnesium (Mg) alloys while avoiding solidification defects.
Hui Wang, Gang Zeng, Chengwei Zhou, Yidi Li, Biaobiao Yang, Ruilin Lai, Chenying Shi, Dikai Guan, Hao Wang, Yujie Cui, Yunping Li   +10 more
doaj   +1 more source

Additive friction stir deposition-enabled upcycling of automotive cast aluminum chips

Additive Manufacturing Letters, 2023
Additive friction stir deposition (AFSD), a deformation-based, near-net-shaping additive technology, is used to consolidate Al chips from automotive castings to produce fully-dense components, while addressing the energy, environmental, and efficiency ...
Jake K. Yoder, Greg D. Hahn, Nanzhu Zhao, Raymond E. Brennan, Kyu Cho, Hang Z. Yu   +5 more
doaj   +1 more source

Ion irradiation and examination of Additive friction stir deposited 316 stainless steel

Materials & Design
This study explored solid-state additive friction stir deposition (AFSD) as a modular manufacturing technology, with the aim of enabling a more rapid and streamlined on-site fabrication process for large meter-scale nuclear structural components with ...
Priyanka Agrawal, Ching-Heng Shiau, Aishani Sharma, Zhihan Hu, Megha Dubey, Yu Lu, Lin Shao, Ramprashad Prabhakaran, Yaqiao Wu, Rajiv S. Mishra   +9 more
doaj   +1 more source

Elucidating the Effect of Additive Friction Stir Deposition on the Resulting Microstructure and Mechanical Properties of Magnesium Alloy WE43

Metals, 2021
In this work, the effect of processing parameters on the resulting microstructure and mechanical properties of magnesium alloy WE43 processed via Additive Friction Stir Deposition (AFSD), a nascent solid-state additive manufacturing (AM) process, is ...
M. B. Williams, T. W. Robinson, C. J. Williamson, R. P. Kinser, N. A. Ashmore, P. G. Allison, J. B. Jordon   +6 more
doaj   +1 more source

A process–structure–property ICME framework for additive friction stir deposition repair of aluminum alloys

Materials & Design
Additive Friction Stir Deposition (AFSD) is a novel solid-state additive manufacturing process that is particularly suitable for repair of aluminum alloys.
Hamza Jabbar, Abigail Taylor, Farid Biniyazan, Jack Grubbs, Bryer Sousa, Sadie Beck, Qiaofu Zhang   +6 more
doaj   +1 more source