Solute strengthening of basal slip in Mg alloys

Tehranchi, Ali; Yin, Binglun; Curtin, W.A.

doi:10.1016/j.actamat.2018.02.056

Cited by 98 publications

(38 citation statements)

References 56 publications

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“…where c is the solute element content (in at. %) and K is a constant that depends on the alloying element and temperature [44,46]. The experimentally determined strengthening in CRSS at 373 K of Fig.…”

Section: Determination Of the Effect Of Solute Strengthening In The Cmentioning

confidence: 99%

Effect of solute content and temperature on the deformation mechanisms and critical resolved shear stress in Mg-Al and Mg-Zn alloys

Wang

Alizadeh

et al. 2019

Acta Materialia

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The influence of solute atoms (Al and Zn) on the deformation mechanisms and the critical resolved shear stress for basal slip in Mg alloys at 298 K and 373 K was ascertained by micropillar compression tests in combination with high-throughput processing techniques based on the diffusion couples. It was found that the presence of solute atoms enhances the size effect at 298 K as well as the localization of deformation in slip bands, which is associated with large strain bursts in the resolved shear stress ( "## )-strain (e) curves. Deformation in pure Mg and Mg alloys was more homogeneous at 373 K and the influence of the micropillar size on the critical resolved shear stress was much smaller. In this latter case, it was possible to determine the effect of solute content on the critical resolved shear stress for basal slip in Mg-Al and Mg-Zn alloys.

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Section: Determination Of the Effect Of Solute Strengthening In The Cmentioning

confidence: 99%

Effect of solute content and temperature on the deformation mechanisms and critical resolved shear stress in Mg-Al and Mg-Zn alloys

Wang

Alizadeh

et al. 2019

Acta Materialia

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“…As mentioned, atomistic calculations indicate that the resistance to basal slip is reduced with Zn additions. Further, similar type of calculations reported that addition of Zn softens the resistance to pyramidal slip 70 . SEM fractographs of the tensile tested specimen further strengthen this argument, finding a predominance of basal slip traces in the peak-aged alloy (see SFig.…”

Section: Discussionmentioning

confidence: 62%

Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications

Alam

Pal

Decker

et al. 2020

Sci Rep

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Lightweight, recyclable, and plentiful Mg alloys are receiving increased attention due to an exceptional combination of strength and ductility not possible from pure Mg. Yet, due to their alloying elements, such as rare-earths or aluminum, they are either not economical or biocompatible. Here we present a new rare-earth and aluminum-free magnesium-based alloy, with trace amounts of Zn, Ca, and Mn (≈ 2% by wt.). We show that the dilute alloy exhibits outstanding high strength and high ductility compared to other dilute Mg alloys. By direct comparison with annealed material of the same chemistry and using transmission electron microscopy (TEM), high-resolution TEM (HR-TEM) and atom probe tomography analyses, we show that the high strength can be attributed to a number of very fine, Zn/Ca-containing nanoscale precipitates, along with ultra-fine grains. These findings show that forming a hierarchy of nanometer precipitates from just miniscule amounts of solute can invoke simultaneous high strength and ductility, producing an affordable, biocompatible Mg alloy.

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“…[18]. [63][64][65][66]. [70]; Variation of CRSS of different slip systems for(d) Mg-Y and (e) Mg-Al alloys [71], obtained using simulations at 0 K. • [93].…”

Section: Introductionmentioning

confidence: 99%

High-throughput screening of strength and creep properties in Mg-Zn alloys

Li¹

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Looking back to the four years and three months that my Ph.D. journey took at IMDEA Materials Institute and the Polytechnic University of Madrid, I wish to express my sincerest and deepest gratitude to many people who offered me their support and help since the first day I arrived at IMDEA. First of all, I would like to express my most sincere gratitude to my supervisor Dr. Jon Molina. We did not even have a Skype meeting before and we only met after two months since I arrived at IMDEA. Thanks for your trust, for providing me with the opportunity to work in your group and for guiding me fully and patiently along this journey. At the beginning, I was new to the nanomechanical field, but you explained patiently the fundamental theory to me and checked the work carefully during each meeting. Gradually, you gave me a lot of freedom and your passion encouraged me to get deeper and deeper into the field. You helped me overcoming the difficulties and avoiding the mistakes that we often make when we work in a quick, eager and impetuous way, without deeper thinking. I still remember one day clearly, when you made me realize how natural aging at room temperature could influence the results on supersaturated Mg-Zn solid solutions. This made us introduce the topic of Zn distribution by studying the diffusion couple in the as-quenched, room aged and peak aged conditions. I also want to thank you for teaching me to think in a critical way, to improve my scientific writing and to help me differentiate between experimental evidence and mere speculation. Many thanks for all your wisdom guidance and continuous encouragement to help me grow during my study and work at IMDEA. Without your scholarly inputs and valuable guidance, this thesis would have not been possible. Your passion and solid background in materials science inspire me to continue working on materials research in the future. I feel so grateful and fortunate for having been working under your supervision and for growing up in our pleasant and exciting group. I also own my most sincere thanks to my other supervisor, Dr. Yuwen Cui, with whom I worked since I joined IMDEA Materials. Despite your departure one year later to Nanjing Tech University, you have remained deeply involved in my thesis. Your guidance, great patience and insightful vision was essential to introduce me in the field of high-throughput development of Mg alloys. I also wish to thank IMDEA Materials Institute for offering me such a fantastic environment for scientific research. I'm grateful for the financial support from the China Scholarship Council. My special thanks go to my colleagues: Dr. Miguel Monclus, thanks for your assistance with performing nanomechanical tests, which were always very timeconsuming; and Dr. Miguel Castillo, thanks for your help with the TEM characterizations and for training in the FIB. Special thanks to Dr. Lingwei Yang and Dr. Chuanyun Wang. You two taught and helped me a lot in micropillar testing and TEM lamellar preparation and also helped me analyse the data even during...

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Solute strengthening of basal slip in Mg alloys

Cited by 98 publications

References 56 publications

Effect of solute content and temperature on the deformation mechanisms and critical resolved shear stress in Mg-Al and Mg-Zn alloys

Effect of solute content and temperature on the deformation mechanisms and critical resolved shear stress in Mg-Al and Mg-Zn alloys

Rare-earth- and aluminum-free, high strength dilute magnesium alloy for Biomedical Applications

High-throughput screening of strength and creep properties in Mg-Zn alloys

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