Twin nucleation in Fe-based bcc alloys—modeling and experiments
نویسندگان
چکیده
منابع مشابه
Twin nucleation in Fe-based bcc alloys—modeling and experiments
We develop an analytical expression for twin nucleation stress in bcc metal and alloys considering generalized planar fault energy and the dislocations bounding the twin nucleus. We minimize the total energy to predict the twinning stress relying only on parameters that are obtained through atomistic calculations, thus excluding the need for any empirical constants. We validate the present appr...
متن کاملTwin migration in Fe-based bcc crystals: theory and experiments
We establish an overall energy expression to determine the twin migration stress in bcc metals. Twin migration succeeds twin nucleation often after a load drop, and a model to establish twin migration stress is of paramount importance. We compute the planar fault energy barriers and determine the elastic energies of twinning dislocations including the role of residual dislocations (br) and twin...
متن کاملMechanism of Void Nucleation and Growth in bcc Fe: Atomistic Simulations Experimental Time Scales
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters.
متن کاملMechanism of void nucleation and growth in bcc Fe: atomistic simulations at experimental time scales.
Evolution of small-vacancy clusters in bcc Fe is simulated using a multiscale approach coupling an atomistic activation-relaxation method for sampling transition-state pathways with environment-dependent reaction coordinate calculations and a kinetic Monte Carlo simulation to reach time scales on the order of ~10⁴ s. Under vacancy-supersaturated condition, di- and trivacancy clusters form and g...
متن کاملA crystal plasticity FE model for deformation with twin nucleation in magnesium alloys
Article history: Received 2 July 2014 Received in final revised form 27 September 2014 Available online 22 October 2014
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Modelling and Simulation in Materials Science and Engineering
سال: 2014
ISSN: 0965-0393,1361-651X
DOI: 10.1088/0965-0393/22/7/075010