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phase transformation

Theocharis's picture

Fracture mechanics of shape memory alloys: review and perspectives

Shape memory alloys (SMAs) are intermetallic alloys displaying recoverable strains that can be an order of magnitude greater than in traditional alloys due to their capacity to undergo a thermal and/or stress-induced martensitic phase transformation. Since their discovery, the SMA industry has been dominated by products for biomedical applications with geometrically small feature sizes, especially endovascular stents.

Ph.D. position(s) in the Mechanics of Materials at the Iowa State University

PhD position(s) are available for Spring 2016 semester to perform theoretical and computational work on phase field modeling of variaous structural changes in engineering materials and modeling of interaction between phase transformations and plasticity. MS degree and background in continuum and computational mechanics is required. Please send vita to Prof. Valery Levitas (vlevitas@iastate.edu).

Info about Prof. Levitas group can be found at

mohsenzaeem's picture

Postdoctoral position in computational materials science

A postdoctoral position is available in the area of phase field modeling of solidification/phase transformation in the Department of Materials Science and Engineering at Missouri University of Science and Technology (formerly University of Missouri-Rolla). MSE program at Missouri S&T is one of the largest and most respected MSE programs in the US
(http://mse.mst.edu).

Temperature–pressure-induced solid–solid 〈100〉 to 〈110〉 reorientation in FCC metallic nanowire

 I would like to share our recent research work on FCC metallic nanowires, which is published in Journal of Physics : Condensed Matters (IOP) . The abstract of the paper is given below. Further details can be found at

Vijay Kumar Sutrakar et al 2012 J. Phys.: Condens. Matter 24 015401 

doi:10.1088/0953-8984/24/1/015401


Abstract: 

Stress-induced martenstic phase transformation in Cu-Zr nanowires

Hi Friends

I want to share some of our recent research work on the stress induced phase transformation of CuZr nanowire which is published in Materials Letters.

http://dx.doi.org/10.1016/j.matlet.2009.02.064

Xiaodong Li's picture

Nanoindentation of the a and c domains in a tetragonal BaTiO3 single crystal

Can we map the eastic modulus of a and c domians? Can we mechanically switch the domains and let them function as nanoactuators and sensors?

Lath martensite

Choose a channel featured in the header of iMechanica: 

Does any one knows a good reference about lath martensite?

Why we see the retained austenite? why doesn't it transformto martensite? What's its effect on the phase transformation? Does the plasticity change the morphology of the transfromation? How about the speed of the transfromation? When should we expect to see the lath martensite? What's the effect of the diagonal terms in the transformation matrix? What's the effect of the shear components? Is there any difference between 2d and 3d simulations, and which one is more realistic?

Austenite Martensite transformation

Does any one knows a good reference about lath martensite?

Why we see the retained austenite? why doesn't it transformto martensite? What's its effect on the phase transformation? Does the plasticity change the morphology of the transfromation? How about the speed of the transfromation? When should we expect to see the lath martensite? What's the effect of the diagonal terms in the transformation matrix? What's the effect of the shear components? Is there any difference between 2d and 3d simulations, and which one is more realistic?

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