Modelling of the workpiece geometry effects on Ti–6Al–4V linear friction welds

Autor: Anthony R. McAndrew, Paul A. Colegrove, Adrian C. Addison, Bertrand C.D. Flipo, Michael J. Russell, Lucie A. Lee

Publikováno v: Materials & Design, Vol 87, Iss , Pp 1087-1099 (2015)

Linear friction welding (LFW) is a solid-state joining process that is finding increasing interest from industry for the fabrication of titanium alloy (Ti–6Al–4V) preforms. Currently, the effects of the workpiece geometry on the thermal fields, m

Externí odkaz: https://doaj.org/article/d23be10df1be497c8c3a9bc1e23d6f4d

Numerical analysis of heat transfer and fluid flow in multilayer deposition of PAW-based wire and arc additive manufacturing

Autor: Philippe Bridgeman, Stewart W. Williams, Xingwang Bai, Jialuo Ding, Haiou Zhang, Jan Hönnige, Xiangman Zhou, Paul A. Colegrove, Chenglei Diao

Publikováno v: International Journal of Heat and Mass Transfer. 124:504-516

A three-dimensional numerical model has been developed to investigate the fluid flow and heat transfer behaviors in multilayer deposition of plasma arc welding (PAW) based wire and arc additive manufacture (WAAM). The volume of fluid (VOF) and porosi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c51dc1305f45ea4a10ffe7117fec30f
https://doi.org/10.1016/j.ijheatmasstransfer.2018.03.085

Residual stress and texture control in Ti-6Al-4V wire + arc additively manufactured intersections by stress relief and rolling

Autor: Jan Hönnige, Michael E. Fitzpatrick, Paul A. Colegrove, Stewart W. Williams, T. Lee, Supriyo Ganguly, Bilal Ahmad

Publikováno v: Materials & Design, Vol 150, Iss, Pp 193-205 (2018)

Additively manufactured intersections have the theoretical risk to contain hydrostatic tensile residual stresses, which eventually cannot be thermally stress relieved. The stresses in Ti-6Al-4V wire + arc additively manufactured (WAAM) intersections

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::971ab67d57b54e4be70607f5b0b7f1ad
http://www.sciencedirect.com/science/article/pii/S0264127518302557

Realisation of a multi-sensor framework for process monitoring of the wire arc additive manufacturing in producing Ti-6Al-4V parts

Autor: Paul A. Colegrove, Vimal Dhokia, Fangda Xu, Stewart W. Williams, Anthony R. McAndrew, Andrew Henstridge, Stephen T. Newman

Publikováno v: Xu, F, Dhokia, V, Colegrove, P, McAndrew, A, Williams, S, Henstridge, A & Newman, S T 2018, ' Realisation of a multi-sensor framework for process monitoring of the wire arc additive manufacturing in producing Ti-6Al-4V parts ', International Journal of Computer Integrated Manufacturing, vol. 31, no. 8, pp. 785-798 . https://doi.org/10.1080/0951192X.2018.1466395

Wire arc additive manufacturing (WAAM) is arc welding-based additive manufacture which is providing a major opportunity for the aerospace industry to reduce buy-to-fly ratios from 20:1 with forging and machining to 5:1 with WAAM. The WAAM method can

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::589d5702b07616228e179b68f5869dd8
https://doi.org/10.1080/0951192x.2018.1466395

Improvement of microstructure and mechanical properties in Wire + Arc Additively Manufactured Ti-6Al-4V with Machine Hammer Peening

Autor: Paul A. Colegrove, Stewart W. Williams, Jan Hönnige

Publikováno v: Procedia Engineering. 216:8-17

Inter-pass rolling is a cold-working technique to improve microstructure and associated mechanical properties in Ti-6Al-4V wire + arc additive manufacturing (WAAM) [1]. Initially developed to eliminate residual stress and distortion in WAAM, rolling

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9ae4fce1c6b62349d73eb3b4bdbc0ec1
https://doi.org/10.1016/j.proeng.2018.02.083