Baolong Zheng
University of California
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Publication
Featured researches published by Baolong Zheng.
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2012
Yuhong Xiong; Dongming Liu; Ying Li; Baolong Zheng; Chris Haines; Joseph Paras; Darold Martin; Deepak Kapoor; Enrique J. Lavernia; Julie M. Schoenung
Aluminum alloys are widely used because they are lightweight and exhibit high strength. In recent years, spark plasma sintering (SPS) technology has emerged as a viable approach to sinter materials due to its application of rapid heating and high pressure. In this study, SPS was chosen to consolidate dense ultrafine-grained (UFG) bulk samples using cryomilled nanostructured Al 5083 alloy (Al-4.5Mg-0.57Mn-0.25Fe, wt pct) powder. Both bimodal microstructure and banded structure were observed through transmission electron microscopy (TEM) investigation. The evolution of such microstructures can be attributed to the starting powder and the process conditions, which are associated with the thermal, electrical, and pressure fields present during SPS. A finite element method (FEM) was also applied to investigate distributions in temperature, current, and stress between metallic powder particles. The FEM results reveal that the localized heating, deformation, and thermal activation occurring at interparticle regions are associated with the formation of the special microstructure.
Philosophical Magazine Letters | 2016
Zhiming Li; Baolong Zheng; Lilia Kurmanaeva; Yizhang Zhou; Ruslan Z. Valiev; Enrique J. Lavernia
Abstract We report on a novel phenomenon, that is a high-strain-induced reverse martensitic transformation in an ultrafine-grained Ti–36Nb–2Ta–3Zr (wt.%) alloy processed by equal channel angular pressing (ECAP) at room temperature. Our results show that a martensitic transformation from body-centred cubic β matrix to orthorhombic α″ martensite occurs under low-strain ECAP conditions and that a large portion (~34%) of martensite transforms into a matrix phase (i.e. reverse martensitic transformation) with increasing ECAP strain to a high value of 4 (i.e. 6 passes) with a corresponding reduction in the α″-lath thickness and a refinement of grain size in the matrix phase.
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2008
Baolong Zheng; Yizhang Zhou; John E. Smugeresky; Julie M. Schoenung; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2008
Baolong Zheng; Yizhang Zhou; John E. Smugeresky; Julie M. Schoenung; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2013
Yan Yang; Xiaodong Peng; Haiming Wen; Baolong Zheng; Yizhang Zhou; Weidong Xie; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2009
Baolong Zheng; Yizhang Zhou; John E. Smugeresky; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2010
Baolong Zheng; Troy D. Topping; John E. Smugeresky; Yizhang Zhou; Asit Biswas; Dean Baker; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2008
Baolong Zheng; John E. Smugeresky; Yizhang Zhou; Dean Baker; Enrique J. Lavernia
Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science | 2014
Zhiming Li; Xiaoping Yang; Junbao Zhang; Baolong Zheng; Yizhang Zhou; Aidang Shan; Enrique J. Lavernia
JOM | 2017
B. E. MacDonald; Z. Fu; Baolong Zheng; Weiping Chen; Yaojun Lin; Fei Chen; Lianmeng Zhang; Julia Ivanisenko; Yizhang Zhou; Horst Hahn; Enrique J. Lavernia