User profiles for "author:John A Francis"

John A Francis

University of Manchester
Verified email at manchester.ac.uk
Cited by 3272

Microstructure and mechanical properties of laser welded S960 high strength steel

W Guo, D Crowther, JA Francis, A Thompson, Z Liu… - Materials & Design, 2015 - Elsevier
S960 steel is an advanced low carbon and low alloy ultra-high strength steel (with a
minimum yield strength of 960 MPa) developed by Tata Steel. At present, there is a scarcity …

Challenging the epidemiologic evidence on passive smoking: tactics of tobacco industry expert witnesses

JA Francis, AK Shea, JM Samet - Tobacco Control, 2006 - tobaccocontrol.bmj.com
Objective: To analyse the statements given by tobacco industry defence witnesses during
trial testimonies and depositions in second-hand smoke cases and in parallel, to review …

Comparison of laser welds in thick section S700 high-strength steel manufactured in flat (1G) and horizontal (2G) positions

W Guo, Q Liu, JA Francis, D Crowther, A Thompson… - CIRP annals, 2015 - Elsevier
Lack of penetration, undercut and melt sagging are common welding defects for single-pass
laser welds in thick plates, particularly when using a traditional 1G welding position (laser …

[HTML][HTML] Microstructure and mechanical characteristics of a laser welded joint in SA508 nuclear pressure vessel steel

W Guo, S Dong, JA Francis, L Li - Materials Science and Engineering: A, 2015 - Elsevier
SA508 steels are typically used in civil nuclear reactors for critical components such as the
reactor pressure vessel. Nuclear components are commonly joined using arc welding …

[HTML][HTML] The impact of transformation plasticity on the electron beam welding of thick-section ferritic steel components

AN Vasileiou, MC Smith, J Balakrishnan… - … engineering and design, 2017 - Elsevier
Welding is an important process used during the construction and maintenance of nuclear
reactor components. Welding results in residual stresses, distortions and microstructural …

[HTML][HTML] Development of microstructure and residual stress in electron beam welds in low alloy pressure vessel steels

AN Vasileiou, MC Smith, JA Francis, J Balakrishnan… - Materials & Design, 2021 - Elsevier
Reduced-pressure electron beam plate butt welds were manufactured in two low-alloy
pressure-vessel steels, SA508 Gr 3 Cl 1 and Gr 2, at two thicknesses in both steels, 30 mm …

Policy-driven tobacco control

JA Francis, EM Abramsohn, HY Park - Tobacco Control, 2010 - tobaccocontrol.bmj.com
Background Since the passage of Proposition 99, California9s comprehensive tobacco
control programme has benefited from a localised policy adoption process that allows for the …

The role of defects in the fracture of an Al–Si–Mg cast alloy

JA Francis, GMD Cantin - Materials Science and Engineering: A, 2005 - Elsevier
A study of the tensile behaviour of test coupons that were extracted from cast plates of D357
aluminium is described. The effects of specimen thickness, heat treatment, structural integrity …

Process-parameter interactions in ultra-narrow gap laser welding of high strength steels

W Guo, D Crowther, JA Francis, A Thompson… - The International Journal …, 2016 - Springer
S960 and S700 are two new high strength steels recently developed by Tata Steel, UK. Due
to the high power densities that can be achieved, small component distortion, and fast …

[HTML][HTML] Effects of dilution on the hardness and residual stresses in multipass steel weldments

YL Sun, CJ Hamelin, AN Vasileiou, Q Xiong… - International Journal of …, 2020 - Elsevier
A thermal-metallurgical-mechanical model was developed to study the effects of dilution in
each weld pass for multipass gas tungsten arc and submerged arc welding in low alloy steel …