Search Results - "Ghaffari, Bita"

The Oxidation of the HiSiMo Cast Irons Alloyed with Cr/Al at 800 °C by Zhu, Wenhui, Pint, Bruce A., Huo, Yang, Godlewski, Larry, Ghaffari, Bita, Lekakh, Simon, Engler-Pinto, Carlos, Li, Mei

“…To improve the oxidation resistance of cast iron containing Si and Mo (HiSiMo), 1wt.% Cr and 3wt.% Al were added into the base alloy to improve high…”
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Spatially resolved ultrasonic attenuation in resistance spot welds: Implications for nondestructive testing by Mozurkewich, George, Ghaffari, Bita, Potter, Timothy J.

“…Spatial variation of ultrasonic attenuation and velocity has been measured in plane parallel specimens extracted from resistance spot welds. In a strong weld,…”
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Machine learning-augmented modeling on the formation of Si-dominated Non-β″ early-stage precipitates in Al-Si-Mg alloys with Si supersaturation induced by non-equilibrium solidification by He, Miao, Li, Yang, Ghaffari, Bita, Huo, Yang, Godlewski, Larry, Li, Mei, Fan, Yue

“…Recent experiments have shown that Al-Si-Mg alloys solidified under high cooling rates may lead to the nucleation of Si-enriched clusters that are remarkably…”
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Sub-wavelength resolution in air-coupled ultrasound images of spot welds by Potter, Timothy J., Ghaffari, Bita, Mozurkewich, George

“…Resistance spot welds joining steel sheets were examined using air-coupled ultrasound at 1 MHz. Transmission C-scan images were obtained using two axially…”
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Distribution of transition metal elements in an Al-Si-Cu-based alloy by Shi, Qianying, Huo, Yang, Berman, Tracy, Ghaffari, Bita, Li, Mei, Allison, John

“…An Al-Si-Cu-based cast alloy was modified with transition metal elements Zr, V and Ti to achieve enhanced mechanical performance at elevated temperatures…”
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Predicting the energetics and kinetics of Cr atoms in Fe-Ni-Cr alloys via physics-based machine learning by Wang, Yuchu, Ghaffari, Bita, Taylor, Christopher, Lekakh, Simon, Li, Mei, Fan, Yue

“…The energy and activation barrier distributions of Cr atoms in austenitic alloys are investigated over a multiplicity of modeling samples across a wide range…”
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Phase-field modeling of θ′ precipitation kinetics in 319 aluminum alloys by Ji, Yanzhou, Ghaffari, Bita, Li, Mei, Chen, Long-Qing

“…[Display omitted] Understanding the morphological evolution of precipitates is critical for evaluating their hardening effects and therefore improving the…”
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Distribution of transition metal elements in an Al-Si-Cu-based alloy by Shi, Qianying, Huo, Yang, Berman, Tracy, Ghaffari, Bita, Li, Mei, Allison, John

“…Not provided…”
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Closed-form full-field modeling of thermal stress in metal powder bed fusion considering part boundary by Cai, Linger, Ghaffari, Bita, Huo, Yang, Li, Mei, Liang, Steven Y.

“…Thermal stress arises from the high temperature gradient generated during the metal powder fusion process, and its generation and distribution significantly…”
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Mechanisms of gas and shrinkage porosity formation in solidifying shear bands by Bhagavath, Shishira, Gong, Zhixuan, Wigger, Tim, Shah, Saurabh, Ghaffari, Bita, Li, Mei, Marathe, Shashidhara, Karagadde, Shyamprasad, Lee, Peter D.

“…[Display omitted] •High strain rate injection experiments using a novel die-piston system were performed.•Full-field strain maps were quantified by digital…”
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Thermo-mechanically affected zone in AA6111 resistance spot welds by Wu, Sainan, Ghaffari, Bita, Hetrick, Elizabeth, Li, Mei, Liu, Qing, Jia, Zhihong

“…[Display omitted] A hardened thermo-mechanically affected zone (TMAZ), measuring a few millimeters in width, was identified between the weld nugget and base…”
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Development of novel Al-Si-Ce filler wires to enable high contrast in X-ray imaging of fusion welded aluminum alloy joints by Benoit, Michael J., Galos, Joel, Heieis, Kevin, Zhu, Suming, Wood, Tom, Sanders, Paul G., Hetrick, Elizabeth T., Ghaffari, Bita, Mouritz, Adrian P., Easton, Mark A.

“…One challenge in using X-ray imaging for post-process inspection of aluminum alloys fusion welded with conventional filler wires (e.g., 4xxx, 5xxx) is the…”
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Microstructure characterization and quasi-static failure behavior of resistance spot welds of AA6111-T4 aluminum alloy by WU, Sai-nan, GHAFFARI, Bita, HETRICK, Elizabeth, LI, Mei, JIA, Zhi-hong, LIU, Qing

“…The microstructure, microhardness and quasi-static failure behavior of resistance spot welds of AA6111-T4 aluminum alloy were experimentally investigated…”
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AA6111铝合金电阻点焊接头的微观组织特征和准静态失效行为 by 吴赛楠 Bita GHAFFARI Elizabeth HETRICK Mei LI 贾志宏 刘庆

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AA6111铝合金电阻点焊接头的微观组织特征和准静态失效行为 by 吴赛楠, Bita GHAFFARI, Elizabeth HETRICK, Mei LI, 贾志宏, 刘庆

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Inferring pore size distributions in cast metals from ultrasonic attenuation by Mozurkewich, George, Ghaffari, Bita, Godlewski, Larry A., Zindel, Jacob W.

“…The frequency dependence of ultrasonic attenuation in cast metals has previously been shown to contain information about the volume fraction and size of pores…”
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Iran’s urban youth falling out of love with marriage by Ghaffari, Bita

“…The government offers low-interest loans to newly-weds to promote marriage and childbearing, and has increased the amounts on offer in recent years, while both…”
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The angry Iranians whose votes could determine the next president by Ghaffari, Bita

“…The 30-year-old architect said he would stay away “because I’m living in economic stress and I don’t have job security, and because normality, freedom and…”
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Iran in charts: The ‘coffin’ car and other signs of economic pain as vote looms by Ghaffari, Bita

“…The rial has fallen sharply against the US dollar over the past decade, pushing up import prices and eroding purchasing power. Iran’s central bank does not…”
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Iran hardliners pushed to unite as reformist shakes up campaign by Ghaffari, Bita

“…Hardliners in Iran’s presidential race are jostling to become their faction’s unity candidate to counter the surprise reformist contender, as they face…”
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