Plastic localization at High Temperature

Check out our latest publication in Acta Materialia: https://lnkd.in/gNftY7e6 Utilizing high-temperature, high-resolution digital image correlation, we’ve been able to observe the temperature-dependence of plastic localization at the nanoscale across a wide field of view. This approach has led to a deeper understanding of the microstructure-dependence of diffusion creep (Coble creep) phenomena during the deformation of …

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Cyclic Slip Accumulation in Structural Metals

Our research team has made a breakthrough in understanding the micro-mechanisms that contribute to fatigue damage under tension-tension loading. These findings are detailed in our recent publication in the journal Acta Materialia. The paper, authored by R.L. Black, D. Anjaria, J. Genée, V. Valle, and J. C. Stinville, is titled “Micro-Strain and Cyclic Slip Accumulation …

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NSF CAREER Award

Jean-Charles Stinville is the 2024 recipient of the National Science Foundation‘s Faculty Early Career Development Program – NSF CAREER Award for his work in Fatigue of Metallic Materials. His goal is to Leveraging Plastic Deformation Mechanisms Interactions in Metallic Materials to Access Extraordinary Fatigue Strength. Metallic materials used in structural engineering are vital to a …

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Liquid Helium Mechanical Testing

We are thrilled to announce that our research group has successfully implemented mechanical testing at liquid helium temperature! This groundbreaking achievement paves the way for innovative advancements in multiple industries, particularly: 🌌 Space: Given the extreme temperatures of outer space, understanding material behavior at such low temperatures is crucial for the development of more resilient …

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Racheff Fellowship

Chris Bean has been selected for the Racheff Teaching Fellowship. The fellowship comes with a stipend for excellent Teaching Assistants who assist in providing high-quality instruction to the undergraduate students in the MatSE Departments in the junior and senior year laboratories or courses in the department’s core curriculum. In Fall 2022, Chris was also named …

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Annual Review of Materials Research

The Stinville group, in partnership with researchers from UCSB, Mines ParisTech, UIUC, and BAM, has recently published an article in the prestigious ARMR journal. The paper presents groundbreaking research endeavors focused on comprehending the localization of plasticity in metals. Insights into Plastic Localization by Crystallographic Slip from Emerging Experimental and Numerical Approaches Annual Review of …

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In-Situ TEM Cyclic Experiments

Our work on in-situ Transmission Electron Microscopy (TEM) experiments has facilitated Professor Sehitoglu’s team in conducting in-situ TEM cyclic tests. These assessments are crucial to understand the fatigue and fracture mechanisms in NiTi nanoscale shape memory alloys. Fatigue and fracture of shape memory alloys in the nanoscale: An in-situ TEM study, Scripta Materialia https://doi.org/10.1016/j.scriptamat.2023.115577 This …

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High-Throughput Imaging by Multi-Beam SEM

Ph.D. Candidate Rephayah Black demonstrated the used of the Multi-Beam SEM technology to statically measure nm-scale plastic deformation events: High-Throughput High-Resolution Digital Image Correlation Measurements by Multi-Beam SEM Imaging, Experimental mechanics https://doi.org/10.1007/s11340-023-00961-y Background: Recent improvements in spatial resolution and measurement sensitivity for high-resolution digital image correlation (HR-DIC) now provide an avenue for the quantitative measurement …

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Plasticity in Additively Manufactured SS 316L

Ph.D. Candidate Chris Bean investigated plastic localization in AM microstructure: International Journal of Plasticity Volume 159, December 2022, 103436 Additively manufactured 316L stainless steels display significantly higher yield strength than their as-cast or wrought counterparts. This is associated with the micro-scale cellular structure and complex grain and sub-grain structure, resulting from high cooling rates occurring …

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