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Energy and Environment Directorate

Piyush Upadhyay

Pacific Northwest National Laboratory
PO Box 999
Richland, WA 99352
(509) 375-6591

PNNL Patents

PNNL Publications

2024

  • Balusu K., H. Das, S. Shukla, A. Soulami, and P. Upadhyay. 2024. "Investigating strength increasing modifications to a friction stir welded AA7075 T-peel joint's exist location: a modeling led study." The International Journal of Advanced Manufacturing Technology 130, no. 11-12:5591-5600. PNNL-SA-184862. doi:10.1007/s00170-024-12961-w
  • Das H., M. Reza E Rabby, S.A. Whalen, P. Upadhyay, and G.J. Grant. 2024. "Impact of backing plate and thermal boundary conditions for high-speed friction stir welding of 25-mm thick aluminum alloy 7175-T79." International Journal of Precision Engineering and Manufacturing-Green Technology. PNNL-SA-184852. doi:10.1007/s40684-024-00607-x

2023

  • Balusu K., H. Das, X. Li, T.J. Roosendaal, R.J. Seffens, A. Soulami, and P. Upadhyay. 2023. "THE ROLE OF FRACTURE PROPERTIES ON LAP JOINT STRENGTH OF FRICTION STIR WELDED AA7055-T6 SHEETS." In TMS 2023: Friction Stir Welding and Processing XII Symposium held at the TMS Annual Meeting and Exhibition, March 19-23, 2023. San Diego, CA. Minerals, Metals and Materials Series, edited by Y. Hovanksi, et al, 193-205. Cham:Springer. PNNL-SA-178514. doi:10.1007/978-3-031-22661-8_18
  • Das H., K.S. Kappagantula, A. Srivastava, P. Upadhyay, J. Fernandez dos Santos, and M. Reza E Rabby. 2023. "Embedded anchoring of multi-material assemblies by friction riveting process." In TMS 2023: Friction Stir Welding and Processing XII Symposium held at the TMS Annual Meeting and Exhibition, March 19-23, 2023. San Diego, CA. Minerals, Metals and Materials Series, edited by Y. Hovanksi, et al, 149-156. Cham:Springer. PNNL-SA-177374. doi:10.1007/978-3-031-22661-8_14
  • Das H., P. Upadhyay, M. Reza E Rabby, U. Okeke, and M. Mcdonnell. 2023. "High speed butt joining of 1” thick 2139-T8." In TMS 2023: Friction Stir Welding and Processing XII Symposium held at the TMS Annual Meeting and Exhibition, March 19-23, 2023. San Diego, CA. Minerals, Metals and Materials Series, edited by Y. Hovanksi, et al, 209-215. Cham:Springer. PNNL-SA-178259. doi:10.1007/978-3-031-22661-8_19
  • Das H., R. Kalsar, S. Shukla, S.Y. Anaman, P. Upadhyay, and H. Cho. 2023. "Microstructure and texture evolution of friction stir lap welded dissimilar multi-aluminum stack." Materials Characterization 206, no. Part A:Art. No. 113398. PNNL-SA-184435. doi:10.1016/j.matchar.2023.113398
  • Das H., X. Li, L. Li, B.J. Schuessler, N.R. Overman, J.T. Darsell, and P. Upadhyay, et al. 2023. "An innovative and alternative approach toward gear fabrication." Journal of Manufacturing Processes 102. PNNL-SA-184447. doi:10.1016/j.jmapro.2023.07.050
  • Ding Q., H. Das, P. Upadhyay, B.C. Sousa, K. Karayagiz, A. Powell, and B. Mishra. 2023. "Microstructural, Corrosion, and Mechanical Characterization of Friction Stir Welded Al 6022-to-ZEK100 Mg Joints." Corrosion and Materials Degradation 4, no. 1:142-157. PNNL-SA-178496. doi:10.3390/cmd4010009
  • Jun J., V.V. Joshi, A.J. Crawford, V.V. Viswanathan, D. Leonard, J. Chen, and P. Upadhyay, et al. 2023. "Galvanic Corrosion of AZ31B Joined to Dual-Phase Steel with and without Zn layer by Ultrasonic and Friction Stir Welding." Journal of Magnesium and Alloys 11, no. 2:462-479. PNNL-SA-176300. doi:10.1016/j.jma.2023.01.016
  • Prabhakaran V., L.E. Strange, R. Kalsar, O.A. Marina, P. Upadhyay, and V.V. Joshi. 2023. "Investigating Electrochemical Corrosion at Mg Alloy-Steel Joint Interface Using Scanning Electrochemical Cell Impedance Microscopy (SECCIM)." Scientific Reports 13. PNNL-SA-170379. doi:10.1038/s41598-023-39961-2

2022

  • Das H., B. Gwalani, X. Ma, and P. Upadhyay. 2022. "Metallurgical Joining of immiscible system: Pure Mg and Pure Fe." Materials Characterization 187. PNNL-SA-166753. doi:10.1016/j.matchar.2022.111821
  • Nasim W., H. Das, S.S. Kulkarni, A. Rohatgi, D.R. Herling, G.J. Grant, and P. Upadhyay, et al. 2022. "Local Thermomechanical Processing for Improving Formability of High Strength Aluminum Sheets." In SAE Annual World Congress Experience, (WCX 2022), April 5-7, 2022, Virtual, Online. SAE Technical Papers, Paper No. 2022-01-0244. Warrendale, Pennsylvania:SAE International. PNNL-SA-168320. doi:10.4271/2022-01-0244
  • Wang T., S.A. Whalen, X. Ma, J.A. Silverstein, H. Das, M. Pallaka, and A. Ortiz, et al. 2022. "Friction-based riveting technique for AZ31 magnesium alloy." Journal of Magnesium and Alloys 10, no. 1:110 - 118. PNNL-SA-155089. doi:10.1016/j.jma.2021.06.004
  • Wang T., T. Liu, T.J. Roosendaal, and P. Upadhyay. 2022. "Reinforcing the exit hole from friction stir welding and processing." Materialia 26. PNNL-SA-175228. doi:10.1016/j.mtla.2022.101611

2021

  • Das H., and P. Upadhyay. 2021. "Stationary Shoulder Friction Stir Assisted Scribe Technique for Dissimilar Joining." Journal of Manufacturing Science and Engineering 143, no. 9:Article No. 094503. PNNL-SA-156811. doi:10.1115/1.4050188
  • Das H., P. Upadhyay, S.S. Kulkarni, and W. Choi. 2021. "Dissimilar joining of ZEK100 and AA6022 for automotive application." In Friction Stir Welding and Processing XI. The Minerals, Metals & Materials Series, edited by Y. Hovanski, et al. Cham:Springer. PNNL-SA-156101. doi:10.1007/978-3-030-65265-4_11
  • Das H., P. Upadhyay, T. Wang, B. Gwalani, and X. Ma. 2021. "Interfacial reaction during friction stir assisted scribe welding of immiscible Fe and Mg alloy system." Scientific Reports 11, no. 1:1588. PNNL-SA-155716. doi:10.1038/s41598-021-81266-9
  • Kulkarni S.S., H. Das, D. Ramirez Tamayo, X. Ma, T. Wang, D. Zhang, and P. Upadhyay, et al. 2021. "A Combined Experimental and Modeling Approach to Investigate the Performance of Joint Between AZ31 Magnesium and Uncoated DP590 Steel Using Friction Stir-Assisted Scribe Technique." Journal of Materials Engineering and Performance 30, no. 11:8296-8308. PNNL-SA-158790. doi:10.1007/s11665-021-06060-0
  • Kulkarni S.S., T.J. Truster, H. Das, V. Gupta, A. Soulami, P. Upadhyay, and D.R. Herling. 2021. "Microstructure-based modeling of friction stir welded joint of dissimilar metals using crystal plasticity." Journal of Manufacturing Science and Engineering 143, no. 12:Art. No. 121008. PNNL-SA-160187. doi:10.1115/1.4051190
  • Kulkarni S.S., V. Gupta, A. Ortiz, H. Das, P. Upadhyay, E.I. Barker, and D.R. Herling. 2021. "Determining cohesive parameters for modeling interfacial fracture in dissimilar-metal friction stir welded joints." International Journal of Solids and Structures 216. PNNL-SA-153218. doi:10.1016/j.ijsolstr.2021.01.023
  • Reza E Rabby M., T.J. Roosendaal, P. Upadhyay, N.R. Overman, J.A. Silverstein, M. Mcdonnell, and S.A. Whalen. 2021. "Process Robustness of Friction Stir Dovetailing of AA7099 to Steel with In Situ AA6061 Interlayer Linking." In Friction Stir Welding and Processing XI. The Minerals, Metals & Materials Series, edited by Y. Hovanski, et al. Cham:Springer. PNNL-SA-155938. doi:10.1007/978-3-030-65265-4_14
  • Upadhyay P., H. Das, and D.D. Graff. 2021. "Three Sheet Al alloy assembly for automotive application." In Friction Stir Welding and Processing XI, The Minerals, Metals & Materials Series, edited by Y. Hovanski, et al. Cham:Springer. PNNL-SA-157267. doi:10.1007/978-3-030-65265-4_2
  • Wang T., L. Li, M. Pallaka, H. Das, S.A. Whalen, A. Soulami, and P. Upadhyay, et al. 2021. "Mechanical and microstructural characterization of AZ31 magnesium-carbon fiber reinforced polymer joint obtained by friction stir interlocking technique." Materials & Design 198. PNNL-SA-150263. doi:10.1016/j.matdes.2020.109305
  • Wang T., P. Upadhyay, and S.A. Whalen. 2021. "A review of technologies for welding magnesium alloys to steels." International Journal of Precision Engineering and Manufacturing-Green Technology 8, no. 3:1027-1042. PNNL-SA-149896. doi:10.1007/s40684-020-00247-x

2020

  • Upadhyay P. 2020. Manufacturing Hybrid Copper-Aluminum Rotors for High Power Induction and Permanent Magnet Electric Motors - CRADA 475. PNNL-SA-159035. Richland, WA: Pacific Northwest National Laboratory. Manufacturing Hybrid Copper-Aluminum Rotors for High Power Induction and Permanent Magnet Electric Motors - CRADA 475
  • Upadhyay P. 2020. Manufacturing Hybrid Copper-Aluminum Rotors for High Power Induction and Permanent Magnet Electric Motors - CRADA 475. PNNL-SA-159035. Richland, WA: Pacific Northwest National Laboratory. doi:10.2172/1867254.Manufacturing Hybrid Copper-Aluminum Rotors for High Power Induction and Permanent Magnet Electric Motors - CRADA 475
  • Wang T., D. Ramirez Tamayo, X. Jiang, P. Kitsopoulos, W. Kuang, V. Gupta, and E.I. Barker, et al. 2020. "Effect of interfacial characteristics on magnesium to steel joint obtained using FAST." Materials & Design 192, no. 2020:108697. PNNL-SA-150237. doi:10.1016/j.matdes.2020.108697
  • Wang T., P. Upadhyay, M. Reza E Rabby, X. Li, L. Li, A. Soulami, and K.S. Kappagantula, et al. 2020. "Joining of Thermoset Carbon Fiber Reinforced Polymer and AZ31 Magnesium Alloy Sheet Via Friction Stir Interlocking." International Journal of Advanced Manufacturing Technology 109, no. 3-4:689-698. PNNL-SA-149338. doi:10.1007/s00170-020-05717-9
  • Wang T., S.A. Whalen, P. Upadhyay, and K.S. Kappagantula. 2020. "Joining Dissimilar Materials via Rotational Hammer Riveting Technique." In Magnesium Technology 2020, edited by J. Brian, et al, 207-212. New York, New York:Springer Nature. PNNL-SA-147128. doi:10.1007/978-3-030-36647-6_32

2019

  • Upadhyay P., X. Li, and T.J. Roosendaal. 2019. "High-Speed Friction stir lap welding of Al alloys." In Friction Stir Welding and Processing X. The Minerals, Metals & Materials Series, edited by Y. Hovanski, et al, 67-75. Cham:Springer. PNNL-SA-140140. doi:10.1007/978-3-030-05752-7_7
  • Wang T., H. Sidhar, R.S. Mishra, Y. Hovanski, P. Upadhyay, and B. Carlson. 2019. "Effect of hook characteristics on the fracture behaviour of dissimilar friction stir welded aluminium alloy and mild steel sheets." Science and Technology of Welding and Joining 24, no. 2:178-184. PNNL-SA-138316. doi:10.1080/13621718.2018.1503801
  • Wang T., H. Sidhar, R.S. Mishra, Y. Hovanski, P. Upadhyay, and B. Carlson. 2019. "Evaluation of intermetallic compound layer at aluminum/steel interface joined by friction stir scribe technology." Materials & Design 174. PNNL-SA-142807. doi:10.1016/j.matdes.2019.107795

2018

  • Gupta V., P. Upadhyay, L.S. Fifield, T.J. Roosendaal, X. Sun, P. Nelaturu, and B. Carlson. 2018. "Linking process and structure in the friction stir scribe joining of dissimilar materials: a computational approach with experimental support." Journal of Manufacturing Processes 32, no. 2018:615-624. PNNL-SA-129173. doi:10.1016/j.jmapro.2018.03.030
  • Wang K., P. Upadhyay, Y. Wang, J. Li, X. Sun, and T.J. Roosendaal. 2018. "Investigation of Interfacial Layer for Friction Stir Scribe Welded Aluminum to Steel Joints." Journal of Manufacturing Science and Engineering 140, no. 11:Article No. 111005. PNNL-SA-131371. doi:10.1115/1.4040873
  • Wang T., H. Sidhar, R.S. Mishra, Y. Hovanski, P. Upadhyay, and B. Carlson. 2018. "Friction stir scribe welding technique for dissimilar joining of aluminium and galvanised steel." Science and Technology of Welding and Joining 23, no. 3:249-255. PNNL-SA-128815. doi:10.1080/13621718.2017.1381460
  • Zhang J., P. Upadhyay, Y. Hovanski, and D.P. Field. 2018. "High-Speed Friction-Stir-Welding of AA7075-T6 sheet: Microstructure,Mechanical properties,Micro-texture and thermal history." Metallurgical and Materials Transactions A - Physical Metallurgy and Materials Science 49, no. 1:210-222. PNNL-SA-128971. doi:10.1007/s11661-017-4411-4

2017

  • Hovanski Y., P. Upadhyay, S. Kleinbaum, B. Carlson, E. Boettcher, and R. Ruokolainen. 2017. "Enabling Dissimilar Material Joining Using Friction Stir Scribe Technology." JOM. The Journal of the Minerals, Metals and Materials Society 69, no. 6:1060-1066. PNNL-SA-125531. doi:10.1007/s11837-017-2334-6

2016

  • Upadhyay P., Y. Hovanski, S. Jana, and L.S. Fifield. 2016. "Joining dissimilar materials using Friction Stir scribe technique." Journal of Manufacturing Science and Engineering 139, no. 3:Article No. 034501. PNNL-SA-121019. doi:10.1115/1.4034629
  • Upadhyay P., Y. Hovanski, S. Jana, and L.S. Fifield. 2016. "JOINING DISSIMILAR MATERIALS USING FRICTION STIR SCRIBE TECHNIQUE." In Proceedings of the ASME 11th International Manufacturing Science and Engineering Conference, June 27-July 1, 2016, Blacksburg, Virginia, 1: Processing, Paper No. MSEC2016-8512, pp. V001T02A055. New York, New York:ASME. PNNL-SA-114869. doi:10.1115/MSEC2016-8512

2015

  • Hovanski Y., P. Upadhyay, B. Carlson, R. Szymanski, T. Luzanski, and D. Marshall. 2015. "FSW of Aluminum Tailor Welded Blanks across Machine Platforms." In Friction Stir Welding and Processing VIII, March 15-19, 2015, Orlando, Florida, edited by RS Mishra, et al, 99-105. Hoboken, New Jersey:John Wiley & Sons, Inc. PNNL-SA-106907. doi:10.1002/9781119093343.ch11
  • Hovanski Y., P. Upadhyay, J. Carsley, T. Luzanski, B. Carlson, M. Eisenmenger, and A. Soulami, et al. 2015. "High-Speed Friction-Stir Welding To Enable Aluminum Tailor-Welded Blanks." JOM. The Journal of the Minerals, Metals and Materials Society 67, no. 5:1045-1053. PNNL-SA-107526. doi:10.1007/s11837-015-1384-x
  • Upadhyay P., A. Reynolds, and A. Reynolds. 2015. "Thermal Management in Friction-Stir Welding of Precipitation-Hardening Aluminum Alloys." JOM. The Journal of the Minerals, Metals and Materials Society 67, no. 5:1022-1031. PNNL-SA-107481. doi:10.1007/s11837-015-1381-0
  • Upadhyay P., A. Rohatgi, E.V. Stephens, R.W. Davies, and D. Catalini. 2015. "HIGH-RATE FORMABILITY OF HIGH-STRENGTH ALUMINUM ALLOYS: A STUDY ON OBJECTIVITY OF MEASURED STRAIN AND STRAIN RATE." In Light Metals 2015: Proceedings of the symposia sponsored by the TMS Aluminum Committee at the TMS 2015 Annual Meeting & Exhibition, March 15-19, 2015, Orlando, Florida, edited by M Hyland, 327-332. Hoboken, New Jersey:John Wiley & Sons, Inc. PNNL-SA-105367. doi:10.1002/9781119093435.ch55
  • Upadhyay P., Y. Hovanski, L.S. Fifield, and K.L. Simmons. 2015. "FRICTION STIR LAP WELDING OF ALUMINUM - POLYMER USING SCRIBE TECHNOLOGY." In Friction Stir Welding and Processing VIII, March 15-19, 2015, Orlando, Florida, edited by RS Mishra, et al, 153-161. Hoboken, New Jersey:John Wiley & Sons, Inc. PNNL-SA-106300. doi:10.1002/9781119093343.ch17

2014

  • Hovanski Y., P. Upadhyay, S. Pilli, B. Carlson, J. Carsley, S. Hartfield-Wunsch, and M. Eisenmenger. 2014. "Aluminum Tailor-Welded Blanks for High Volume Automotive Applications." In Light Metals 2014, February 16-20, 2014, San Diego, California, edited by J Grandfield, 265-270. Hoboken, New Jersey:Wiley & Sons. PNNL-SA-98502. doi:10.1002/9781118888438.ch46

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