Novelis is hiring for a Principal Scientist in Atlanta, GA.
Reporting to the Group Leader for Surface Science, this senior scientist will provide wide-ranging contributions to various Company Critical, Enabling Science and Exploratory programs. We are looking for someone with at least 12 years of research experience and a proven ability to manage multi-disciplinary research groups. The successful candidate will probably have a strong background in Metallurgy/Materials Science combined with research experience in at least one adjacent technical discipline, such as corrosion, electrochemistry and/or surface analysis/spectroscopy. Experience in the development of thin - functional films, or other forms of engineered surfaces would be desirable. The position will require a high level of skill in the planning and execution of R&D projects/programs, including effective regular reporting and communication at senior technology and business levels.
The full job description can be viewed here:
https://novelis.taleo.net/careersection/globalext/jobdetail.ftl
Please send all resumes to claire.odioso@novelis.com.
Hello everyone,
I want to simulate contact problem by using UEL.I define the surface in the inp file.But abaqus don not
recognize it. How can I solve this problem?
PS. Sorry for my English.I hope it is clever enough to understand the problem.
Regards.
J.H. Zhai
Dear all,
Can someone please guide me to comprehensive literature for implementing multi-yield surface plasticity in numerical codes. I am not sure if I, properly, understand the algorithm.
Thanks in advance
Best regards,
Hisham
Although deformation processes in submicron-sized metallic crystals are
well documented, the direct observation of deformation mechanisms in
crystals with dimensions below the sub-10-nm range is currently lacking.
Here, through in situ high-resolution transmission electron
microscopy (HRTEM) observations, we show that (1) in sharp contrast to
what happens in bulk materials, in which plasticity is mediated by
dislocation emission from Frank-Read sources and multiplication, partial
dislocations emitted from free surfaces dominate the deformation of
gold (Au) nanocrystals; (2) the crystallographic orientation (Schmid
factor) is not the only factor in determining the deformation mechanism
of nanometre-sized Au; and (3) the Au nanocrystal exhibits a phase
transformation from a face-centered cubic to a body-centered tetragonal
structure after failure. These findings provide direct experimental
evidence for the vast amount of theoretical modelling on the deformation
mechanisms of nanomaterials that have appeared in recent years.