XU Pingguang

J-GLOBAL         Last updated: Oct 22, 2018 at 20:22
XU Pingguang
Japan Atomic Energy Agency
Materials Sciences Research Center

Research Areas


Published Papers

Evaluation of Residual Stress Relaxation in a Rolled Joint by Neutron Diffraction
M. Hayashi, J.H. Root, R.B. Rogge and P.G. Xu
Quantum Beams Science   2(4) 21.1-21.16   Oct 2018   [Refereed]
The rolled joint of a pressure tube, consisting of three axial symmetric parts, modified
SUS403 stainless steel as an inner extension, Zr–2.5Nb as the pressure tube and an Inconel-718
outer sleeve has been examined by neutron diffraction for resid...
High Stereographic Resolution Texture and Residual Stress Evaluation Using Time-Of-Flight Neutron Diffraction
P.G. Xu, S. Harjo, M. Ojima, H. Suzuki, T. Ito, W. Gong, S.C. Vogel, J. Inoue, Y. Tomota, K. Aizawa, K. Akita,
Journal of Applied Crystallography   51 746-760   Jun 2018   [Refereed]
Neutron diffraction texture measurements provide bulk averaged textures with excellent grain orientation statistics, even for large-grained materials, owing to the probed volume being of the order of 1 cm3. Furthermore, crystallographic parameters...
Yo Tomota, Nobuaki Sekido, Pingguang Xu, Takuro Kawasaki, Stefanus Harjo, Masahiko Tanaka, Takehisa Shinohara, Yuhua Su and Akira Taniyama
Tetsu-to-Hagane   103 570-578   Oct 2017   [Refereed]
Various methods were employed to measure the austenite volume fraction in a 1.5Mn-1.5Si-0.2C steel. It has been confirmed that the volume fractions determined by transmission electron microscopy, scanning electron microscopy/electron back scatter ...
Quantitative Evaluation of Texture and Dislocations during Annealing after Hot Deformation in Austenitic Steel using Neutron Diffraction
Y. Tomota, S. Sato, M. Uchida, P.G. Xu, S. Harjo, W. Gong, T. Kawasaki
Materials Science Forum   905 25-30   Aug 2017   [Refereed]
Microstructural change during hot compressive deformation at 700 ºC followed by isothermal annealing for a Fe-32Ni austenitic alloy was monitored using in situ neutron diffraction. The evolution of deformation texture with 40% compression and its ...
P.G. Xu, Y. Tomota, Y. Arakaki, S. Harjo, H. Sueyoshi
Materials Characterization   127 104-110   Mar 2017   [Refereed]
The volume fractions of austenite (fA) in hot rolled and heat treated TRIP steel sheets were evaluated using time-of-flight (TOF) neutron diffraction through four different methods. They include the conventional analysis method with random texture...
Yin-Qiang Wang, Wei-Zhuo Gai, Xia-Yu Zhang, Hong-Yi Pan, Zhenxiang Cheng, Pingguang Xu, Zhen-Yan Deng
RSC Advances   7 2103-2109   2017   [Refereed]
Al powder was stored in saturated water vapor, oxygen, nitrogen and drying air separately for a time period of up to similar to six months, the degradation behavior of Al activity was characterized by the reaction of Al with water. It was found th...
   2017   [Refereed]
The strain distribution in a multilayered steel composite, which consists of martensite and austenite layers, was evaluated by energy dispersive X-ray diffraction to investigate the homogeneity of deformation in the martensite layer under uniaxial...
Yusuke Onuki, Akinori Hoshikawa, Shigeo Sato, Pingguang Xu, Toru Ishigaki, Yoichi Saito, Hidekazu Todoroki, Makoto Hayashi
Journal of Applied Crystallography   49 1579-1584   Oct 2016   [Refereed]
A rapid texture measurement system has been developed on the time-of-flight neutron diffractometer iMATERIA (beamline BL20, MLF/J-PARC, Japan). Quantitative Rietveld texture analysis with a neutron beam exposure of several minutes without sample r...
Gao-Heng Liang, Wei-Zhuo Gai, Zhen-Yan Deng, Pingguang Xu, Zhenxiang Cheng
RSC Advances   6 35305-35314   2016   [Refereed]
The kinetics of the Al-water reaction promoted by an ultrasonically prepared Al(OH)(3) suspension is investigated. It is found that the induction time for the beginning of the Al-water reaction decreases and the reaction rate increases with increa...
XU Pingguang, YIN Jiang, ZHANG Shu-Yan
Acta Metallurgica Sinica   51(11) 1297-1305   Nov 2015   [Refereed]
The tensile deformation behavior and the axial lattice strain response of 1250 MPa ultra-high strength steels with and without hydrogen charging were comparably investigated using time-of-flight neutron diffraction together with the fracture morph...
P.G. Xu, Y. Tomota, S.C. Vogel, T. Suzuki, M. Yonemura, T. Kamiyama
Reviews on Advanced Materials Science   33 389-395   Jul 2013   [Refereed]
The ferrite-to-austenite transformation during heating and the austenite-to-ferrite transformation during cooling were in situ investigated by KEK/SIRIUS and LANSCE/HIPPO neutron diffractometers under the stress-free condition. The deviation of fe...
P.G. Xu, K. Akita, H. Suzuki, N. Metoki, A. Moriai
Materials Transactions   53(11) 1831-1836   Nov 2012   [Refereed]
Different from electron back-scattering diffraction and X-ray diffraction, neutron diffraction enables to directly measure the bulk texture because of the high penetrability and the large spot size of neutron beam and easily investigate the prefer...
T. Suzuki, K. Yamanaka, M. Ishino, Y. Shinohara, K. Nagal, E. Tsuru, P.G. Xu
Tetsu-to-Hagane   98(6) 262-266   Jun 2012   [Refereed]
The work-hardening characteristics of anisotropic tensile deformations and the corresponding residual strain changes of pre-strained lerritic steels without and with aging treatment were investigated by using angle dispersive neutron diffraction a...
M. Ojima, J. Inoue, S. Nambu, P.G. Xu, K. Akita, H. Suzuki, T. Koseki
Scripta Materialia   66(3-4) 139-142   2012   [Refereed]
Stress partitioning in multilayered steels consisting of martensitic and austenitic layers was measured during tensile deformation by in situ neutron diffraction measurements to investigate the mechanism of the improved strength–elongation balance...
M.S. Koo, P.G. Xu, Y. Tomota, H. Suzuki
Scripta Materialia   61(8) 797-800   2009   [Refereed]
Bainitic transformation behavior has firstly been observed using in situ neutron diffraction with an angular dispersive method for a hard bainite steel. The dilatometric measurement was carried out simultaneously with the neutron experiment where ...
Y. Tomota, P.G. Xu, T. Kamiyama, E.C. Oliver
Nuclear Instruments and Methods in Physics Research Section A   600 313-315   2009   [Refereed]
Phase transformations on heating and cooling or during thermo-mechanically controlled processing (TMCP) for a low alloyed steel were studied by means of in situ neutron diffraction. Cylindrical specimens were quenched after austenitization and hen...
S.Y. Zhang, E. Godfrey, W. Kockelmann, A. Paradowska, M.J. Bull, A.M. Korsunsky, B. Abbey, P.G. Xu, Y. Tomota, D. Liljedahl, O. Zanellato, M. Fitzpatrick, M.R. Daymond, R.M. Toda, R.A. Holt, J. Kelleher, S. Siano and J. Santisteban
Materials Today   12(7-8) 78-84   2009   [Refereed]
Neutron diffraction methods offer a direct measure of the elastic component of strain deep within crystalline materials through precise characterisation of the interplanar crystal lattice spacing. The unique non-destructive nature of this measurem...
Y. Adachi, P.G. Xu, Y. Tomota
ISIJ International   48(8) 1056-1062   2008   [Refereed]
Physical meaning of dynamic transformation was re-considered with a particular attention to the effect of post-transformation deformation on crystallography and kinetics of transformed ferrite. An advanced in-situ neutron diffraction experiment wa...
J.H. Li, P.G. Xu, Y. Tomota, Y. Adachi
ISIJ International   48(7) 1008-1013   2008   [Refereed]
The dynamic recrystallization behavior during warm compression for a low carbon martensite steel was investigated to make clear the effects of initial martensite block size, compression strain and pre-tempering before compression. It is found that...
P.G. Xu, J.H. Li, Y. Tomota, Y. Adachi
ISIJ International   48(11) 1609-1617   2008   [Refereed]
The microstructures of two high-nickel martensite steels with different carbon contents before and after warm compression were comparably investigated by using a field-emission scanning electron microscope attached with an electron backscattering ...
P.G. Xu, Y. Tomota, E.C. Oliver
ISIJ International   48(11) 1618-1625   2008   [Refereed]
The austenite precipitation and dynamic recrystallization behaviors of 17Ni–0.2C martensite steel during isothermal tempering at 500°C followed by isothermal warm compression at 8.3×10−4/s were investigated in situ using neutron diffraction. The R...
P.G. Xu, Y. Tomota, H. Suzuki, T. Suzuki, S. Machiya, F.X. Yin
Materials Transactions   49(9) 2033-2039   2008   [Refereed]
{110}, {200} and {211} neutron diffraction profiles of an interstitial-free annealed steel sheet were measured on 5×5 degrees stereographic angle grids, and several evaluation methods of diffraction intensity were employed to calculate the bulk te...
Y. Tomota, P.G. Xu
Ferrum   12(1) 15-21   2007   [Invited]
P.G. Xu, F.X. Yin, Y.H. Huan, Y. Tomota, K. Nagai
Materials Science and Engineering A   433(1-2) 8-17   2006   [Refereed]
Ferrite microstructures and plastic anisotropy of low-carbon steel strips with and without evident differences in crystallographic textures were investigated. The steel strips with weak texture variation show a weaker linear dependence of normal a...
P.G. Xu, F.X. Yin, K. Nagai
Materials Science and Engineering A   441(1-2) 157-166   2006   [Refereed]
The δ-ferrite dendrite structures, the as-cast ferrite grain morphology, the EBSD microscopic orientation characteristics and the macroscopic crystallographic textures of different low-carbon steel strips were investigated and the solidification c...
P.G. Xu,Y.H. Huan, F.X.Yin, K. Nagai
Acta Metallurgica Sinica   42(1) 6-12   2006   [Refereed]
he ferrite morphology and crystallographic textures of two groups of low-carbon steel strips were comparatively investigated as well as the plastic anisotropy at 15% engineering strain: one group was heat-treated from two twin-roller-cast strips; ...
P.G. Xu, Y. Tomota
Acta Metallurgica Sinica   42(7) 681-688   2006   [Refereed]
Neutron diffraction is an atomic- or molecular-level characterization technique of material structures and microscopic movements because neutron is an electronic neutral subatomic particle with certain magnetic moment, strong penetration, more sen...
P.G. Xu, Y. Tomota, P. Lukáš, O. Muránsky, Y. Adachi
Materials Science and Engineering A   435-436 46-53   2006   [Refereed]
Microstructural evolution during the ferrite transformation in two low alloy steels was investigated in situ by neutron diffraction. The transformation kinetics determined from the neutron diffraction profiles were well consistent with those measu...
Y.Z. Bao, Y. Adachi, Y. Toomine, T. Suzuki, P.G. Xu, Y. Tomota
Tetsu-to-Hagane   91(7) 602-608   2005   [Refereed]
The 18Ni, 17Ni-0.2C and low carbon (SM490) steels were quenched after austenitization to obtain full martansite structure. Then specimens were heated rapidly up to various temperatures below As followed by compression with various strain rates. Du...
Y.Z. Bao, Y. Adachi, Y. Toomine, P.G. Xu, T. Suzuki, Y. Tomota
Scripta Materialia   53(12) 1471-1476   2005   [Refereed]
A 17Ni–0.2C martensite steel was rapidly heated below the austenite formation temperature and deformed in compression. Continuous dynamic recrystallization was observed. The behavior is similar to that in a ferrite–pearlite steel but the onset str...
P.G. Xu, B.Z. Bai, F.X. Yin, H.S. Fang, K. Nagai
Materials Science and Engineering A   385(1-2) 65-73   2004   [Refereed]
The abrasive wear resistance of a hot-rolled and air-cooled high strength low alloy (HSLA) steel with grain boundary allotriomorphic ferrite/granular bainite (FGBA/Bg) duplex microstructure was investigated by comparison with the granular bainitic...
P.G. Xu, F.X. Yin, K. Nagai
Materials Transactions   45(2) 447-456   2004   [Refereed]
Two low-carbon steels with different impurity contents were prepared by strip casting to clarify the advantages of the process. The mechanical properties and the plastic anisotropy of the as-cast, the homogenized and the recrystallization annealed...
P.G. Xu, F.X. Yin, K. Nagai
Materials Transactions   45(7) 2456-2462   2004   [Refereed]
The compact strip production (CSP) technology composed of thin slab casting and direct hot rolling has attracted much attention due to its apparent cost advantage. In this paper, the microstructural and textural variations in the through-thickness...
The mechanism of bainite transformation
H.S.Fang, J.B. Yang, Z.G. Yang, B.Z. Bai, D.Y. Liu, P.G. Xu
Joural de Physique IV   112 289-292   2003   [Refereed]
Ultra-fine structures of bainite and its surface relief, and carbide nucleation inside austenite at the interface of ferrite/austenite are studied in this paper. The sympathetic nucleation and ledgewise growth theory is applied to explain the expe...
Development of Grain Boundary Allotriomorphic Ferrite/Granular Bainite Duplex Steel
P.G. Xu, B.Z. Bai, H.S. Fang
Journal of University of Science and Technology Beijing   10(2) 39-44   2003   [Refereed]
A new hot-rolled low alloy high strength steel with grain boundary allotriomorphic ferrite/granular bainite duplex microstructure has been developed through novel microstructure and alloying designs without any noble metal elements such as nickel ...
New Duplex Microstructure of Grain Boundary Allotriomorphic Ferrite/Granular Bainite
P.G. Xu, H.S. Fang, B.Z. Bai, Z.J. Wang, Z.G. Yang, J.F. Huang
Journal of Iron and Steel Research International   9(2) 33-38   2002   [Refereed]
As-rolled microstructure and mechanical properties of a new kind of grain boundary allotriomorphic ferrite/granular bainite duplex steel plate and its crack propagation behavior were investigated in comparison with simple granular bainitic steel p...
P.G. Xu, H.S. Fang, B.Z. Bai
Acta Metallurgica Sinica   38(3) 255-260   2002   [Refereed]
The as-rolled toughness and crack propagation behavior of grain boundary allotriomorphic ferrite/granular bainite duplex microstructure were studied. In comparison with single granular bainite, the duplex microstructure obtained under the conditio...

Books etc

Recrystallization Behavior during Warm Compression of Martensite Steels, (Chapter 5 of) Recrystallization, Edited by K. Sztwiertnia, pp.87-108.
Feb 2012   ISBN:979-953-307-346-9

Research Grants & Projects

Hydrogen embrittlement-resistant upgradation and its mechanism of ultrahigh strength steel through texture control
Japan Society for the Promotion of Science (JSPS): Grant-in-Aid for Scientific Research (C, No.17K06852)
Project Year: Apr 2017 - Mar 2020    Investigator(s): XU Pingguang
Crystallographic Texture Evolution During Microstructure Refinement Processes Studied by Time-Of-Flight Neutron Diffraction
Japan Society for the Promotion of Science (JSPS): Grant-in-Aid for Young Scientists (No.21860090)
Project Year: Apr 2009 - Sep 2011    Investigator(s): XU Pingguang