Principal preferred orientation evaluation of steel materials using time-of-flight neutron diffraction

Xu, P. G.; Zhang, S.-Y.*; Harjo, S.; Vogel, S. C.*; Tomota, Yo*

Quantum Beam Science (Internet), 8(1), p.7_1 - 7_13, 2024/01

https://doi.org/10.3390/qubs8010007

observation and analysis of solid-state diffusion and liquid migration in a crystal growth system; A Segregation-driven diffusion couple

Tremsin, A. S.*; Perrodin, D.*; Losko, A. S.*; Vogel, S. C.*; Shinohara, Takenao; Oikawa, Kenichi; Bizarri, G. A.*; Bourret, E. D.*; Peterson, J. H.*; Wang, K. P.*; et al.

Acta Materialia, 186, p.434 - 442, 2020/03

https://doi.org/10.1016/j.actamat.2020.01.013

Transformation strain and texture evolution during diffusional phase transformation of low alloy steels studied by neutron diffraction

Xu, P. G.; Tomota, Yo*; Vogel, S. C.*; Suzuki, Tetsuya*; Yonemura, Masao*; Kamiyama, Takashi*

Reviews on Advanced Materials Science, 33(5), p.389 - 395, 2013/08

http://www.ipme.ru/e-journals/RAMS/no_53313/02_533_xu.html

Microstructure observation and texture evaluation of low alloy steel after dynamic ferrite transformation

Xu, P. G.; Tomota, Yo*; Gong, W.*; Vogel, S. C.*; Suzuki, Hiroshi; Suzuki, Tetsuya*

no journal, , 

Our neutron diffraction study of deformation induced ferrite transformation showed that at the lower temperature in the dual phase region, the evident change in grain orientation density of ferrite was found between large strain hot compression and small strain hot compression. In this study, the microstructure observation showed that the dynamic recrystallization occurred during the hot compression. The texture evaluation showed a strong (001)[uvw] component together with a (111)[uvw] fiber, which is consistent with our previous neutron analysis on grain orientation density. At 913K in the dual phase region, the large deformation resulted into coarse-fine mixed microstructure. The coarse grains were related to the untransformed austenite while the fine grains were partially related to the dynamic transformation of ferrite and partially related to the dynamic recrystallization of ferrite. It suggested that the dynamic ferrite transformation was orientation-dependent.

Dynamic ferrite transformation behavior during hot deformation of low alloy steels studied by neutron diffraction

Xu, P. G.; Tomota, Yo*; Paradowska, A.*; Vogel, S. C.*

no journal, , 

The deformation induced ferrite transformation at two different strain rates was carried out to compare that during isothermal holding without deformation and the effects of hot deformation and strain rate on the dynamic transformation evolution was investigated. It confirmed that the deformation induced ferrite transformations could appear not only in the austenite single phase region, but also in the austenite-ferrite dual phase region. It was found that the high strain rates were helpful to accelerate the ferrite transformation at different temperatures. Moreover, the low temperature deformation was more effective than the high temperature to promote the ferrite transformation until a critical strain, and then the accelerating effect of low temperature deformation on ferrite transformation was weakened because of the evident increment of carbon concentration in austenite and the appearance of dynamic recrystallization of ferrite.

Recrystallization of martensite and precipitation of austenite during in situ annealing of cold rolled 17Ni-0.2C martensite steel studied by neutron diffraction

Xu, P. G.; Harjo, S.; Vogel, S. C.*; Ito, Takayoshi*; Tomota, Yo*

no journal, , 

Bulk texture evaluation technique using TAKUMI time-of-flight neutron diffraction

Xu, P. G.; Ito, Takayoshi*; Harjo, S.; Akita, Koichi; Aizawa, Kazuya; Vogel, S. C.*; Kockelmann, W.*

no journal, , 

Texture measurement of round robin limestone using angle dispersive neutron diffraction

Xu, P. G.; Morooka, Satoshi; Yamamoto, Kazuyoshi; Vogel, S. C.*; Lutterotti, L.*; Shobu, Takahisa

no journal, ,