Bita Ghaffari
Ford Motor Company
31 Papers
29 Citations
Bita Ghaffari is an academic researcher from Ford Motor Company. The author has contributed to research in topics: Spot welding & Alloy. The author has an hindex of 8, co-authored 24 publications.
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Papers
Phase-field modeling of θ′ precipitation kinetics in 319 aluminum alloys
TL;DR: In this article, a three-dimensional phase-field model for capturing both the nucleation and the growth kinetics of the precipitates and applying it to modeling θ′ precipitates in 319 aluminum alloys is presented.
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Combined Deformation and Solidification-Driven Porosity Formation in Aluminum Alloys
S. Bhagavath,Biao Cai,Robert C. Atwood,Mei Li,Bita Ghaffari,Peter D. Lee,Shyamprasad Karagadde +6 more
TL;DR: In this article, isothermal semi-solid compression and subsequent cooling of aluminum die-cast alloy specimens were characterized using fast synchrotron tomography, which enabled the investigation and quantification of gas and shrinkage porosity evolution during deformation and solidification.
Microstructure characterization and quasi-static failure behavior of resistance spot welds of AA6111-T4 aluminum alloy
TL;DR: In this paper, the microstructure, microhardness and quasi-static failure behavior of resistance spot welds of AA6111-T4 aluminum alloy were experimentally investigated.
24
Distribution of transition metal elements in an Al-Si-Cu-based alloy
TL;DR: In this article, an AlSi-Cu-based cast alloy was modified with transition metal elements Zr, V and Ti to achieve enhanced mechanical performance at elevated temperatures, and multiple microstructural characterization techniques were used to investigate the solidification segregation behavior of these transition metal element and their partitioning to the primary intermetallic phases and secondary precipitates.
19
Spatially resolved ultrasonic attenuation in resistance spot welds: implications for nondestructive testing.
TL;DR: The observed attenuations do not vary as commonly presumed with weld quality, suggesting that the common practice of using ultrasonic attenuation to indicate weld quality is not a reliable methodology.
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