Comparisons of self-annealing behaviour of HPT-processed high purity Cu and a PbâSn alloy

Autor: Yi Huang, Shima Sabbaghianrad, Abdulla I. Almazrouee, Khaled J. Al-Fadhalah, Saleh N. Alhajeri, Nian Xian Zhang, Terence G. Langdon

Publikováno v: Journal of Materials Research and Technology, Vol 6, Iss 4, Pp 390-395 (2017)

Early published results have demonstrated that high purity Cu and a Pbâ62% Sn alloy exhibit very different behaviour during high-pressure torsion (HPT) processing at room temperature and subsequent room temperature storage. High purity Cu showed str

Externí odkaz: https://doaj.org/article/baf0d649c35c4499ac354517bca89e11

An examination of the saturation microstructures achieved in ultrafine-grained metals processed by high-pressure torsion

Autor: Shima Sabbaghianrad, Jittraporn Wongsa-Ngam, Megumi Kawasaki, Terence G. Langdon

Publikováno v: Journal of Materials Research and Technology, Vol 3, Iss 4, Pp 319-326 (2014)

Experiments were conducted on two commercial alloys, a Cu–0.1%Zr alloy and an Al-7075 aluminum alloy, to investigate the significance of the saturation microstructure which is achieved after processing by high-pressure torsion (HPT). Samples were p

Externí odkaz: https://doaj.org/article/b8d3a0e12b694ebe915e2bc5e2556392

Evaluating the paradox of strength and ductility in ultrafine-grained oxygen-free copper processed by ECAP at room temperature

Autor: Shima Sabbaghianrad, Yi Huang, Meshal Y. Alawadhi, Terence G. Langdon

Oxygen-free copper of >99.95% purity was processed by equal-channel angular pressing at room temperature (RT) for up to 24 passes and then pulled to failure at RT using strain rates from 10−4 to 10−2 s−1. The results show that the microstrain i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1901180a2ca8e960dc4a18dd109725df
https://eprints.soton.ac.uk/445997/

An investigation of the limits of grain refinement after processing by a combination of severe plastic deformation techniques: A comparison of Al and Mg alloys

Autor: Terence G. Langdon, Seyed Alireza Torbati-Sarraf, Shima Sabbaghianrad

Publikováno v: Materials Science and Engineering: A. 712:373-379

An Al-7075 aluminum alloy and a ZK60 magnesium alloy were processed by a combination of equal-channel angular pressing (ECAP) for 4 passes and high-pressure torsion (HPT) through total numbers of up to 20 turns. Processing by ECAP and HPT were perfor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2302a15d162b37b1b1a5f8cb044172f6
https://doi.org/10.1016/j.msea.2017.11.090

Microstructure and Hardness Evolution in Magnesium Processed by HPT

Autor: Shima Sabbaghianrad, Isabela C. Tristão, Cláudio L. P. Silva, Roberto B. Figueiredo, Seyed Alireza Torbati-Sarraf, Terence G. Langdon

Publikováno v: Materials Research, Vol 20, Iss suppl 1, Pp 2-7 (2017)
Materials Research v.20 suppl.1 2017
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Volume: 20 Supplement 1, Pages: 2-7, Published: 12 SEP 2017
Materials Research, Issue: ahead, Published: 12 SEP 2017

High pressure torsion provides an opportunity to process materials with low formability such as magnesium at room temperature. The present work shows the microstructure evolution in commercially pure magnesium processed using a pressure of 6.0 GPa up

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa6aa31d0a7402d55b407d28844c9bf2
http://www.scielo.br/pdf/mr/v20s1/1516-1439-mr-1980-5373-MR-2017-0223.pdf