Chuanjun Li

Prof. Dr. Chuanjun Li

School of Materials Science and Engineering, Shanghai University, Shanghai, China

Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
22 December 2017 in Scientific Reports
Verified
Journal Article
Open access
PDF file
Chuanjun LiChuanjun Li
Chuanjun Li
SHShengya He
Shengya He
HEHannes Engelhardt
Hannes Engelhardt
TZTongjun Zhan
Tongjun Zhan
WXWeidong Xuan
Weidong Xuan
MRMarkus Rettenmayr
Markus Rettenmayr
For applying an alternating magnetic field (AMF) in materials processing it is of high significance to understand the physical mechanisms behind the change in diffusivity in the AMF. In this work, the effect of the AMF on interdiffusion in a Ni-Cr alloy was investigated with a diffusion couple. The interdiffusion coefficient was found to increase with increasing AMF intensity. The faster diffusivity is a consequence of the enhancement of the dislocation density in the diffusion couples that was confirmed by the broadening of X-ray diffraction peaks. The higher dislocation density is attributed to the magnetoplastic effect (MPE). Theoretical considerations on the relation of MPE, dislocation density and diffusivity are in agreement with the experimental results.

31 January 2009 in Materials Letters
Verified
Journal Article
Closed access
Chuanjun LiChuanjun Li
Chuanjun Li
ZRZhongming Ren
Zhongming Ren
WRWeili Ren
Weili Ren

13 November 2018 in The Journal of Physical Chemistry C
Verified
Journal Article
Closed access
Chuanjun LiChuanjun Li
Chuanjun Li
YCYang Cao
Yang Cao
SLStephanie Lippmann
Stephanie Lippmann
ZRZhongming Ren
Zhongming Ren
MRMarkus Rettenmayr
Markus Rettenmayr

13 February 2017 in Applied Physics Letters
Verified
Journal Article
Closed access
Chuanjun LiChuanjun Li
Chuanjun Li
SHShengya He
Shengya He
YFYafu Fan
Yafu Fan
HEHannes Engelhardt
Hannes Engelhardt
SJShanghua Jia
Shanghua Jia
ZRZhongming Ren
Zhongming Ren
The diffusivity in the Ni-Al system with and without an alternating magnetic field (AMF) was investigated by the diffusion couple technique. It was found that the diffusion coefficient was increased with increasing AMF intensity. The enhanced diffusivity in the AMF can be ascribed to the increase in the dislocation density in the diffusion couples, which was demonstrated by the broadening of X-ray diffraction peaks. The higher dislocation density was induced by the magnetoplastic effect (MPE). The theoretical calculation based on the MPE is in agreement with the experimental values.

2 January 2015 in Philosophical Magazine Letters
Verified
Journal Article
Closed access
Chuanjun LiChuanjun Li
Chuanjun Li
RGRui Guo
Rui Guo
ZYZhaojing Yuan
Zhaojing Yuan
WXWeidong Xuan
Weidong Xuan
ZRZhongming Ren
Zhongming Ren
QWQiuliang Wang
Qiuliang Wang
The nucleation undercoolings of non-magnetic metals like paramagnetic aluminium in high magnetic fields were measured by the differential thermal analysis technique. It was shown that the nucleation undercooling of pure aluminium increased with increasing the magnetic field, while its melting temperature was hardly changed. Based on the model of magnetic dipoles at the interface, it is proposed that the magnetic-field-induced interfacial energy mainly contributes to the increase in undercooling. The change in undercooling in the magnetic field is calculated theoretically, which is in comparison with experimental data. Additionally, the inhibition of atom diffusion in the magnetic field plays a role in the change of undercooling.

1 July 2009 in Review of Scientific Instruments
Verified
Journal Article
Closed access
Chuanjun LiChuanjun Li
Chuanjun Li
ZRZhongming Ren
Zhongming Ren
WRWeili Ren
Weili Ren
KDKang Deng
Kang Deng
GCGuang-Hui Cao
Guang-Hui Cao
YWYuqin Wu
Yuqin Wu
The differential thermal analysis (DTA) apparatus has been developed for a commercial superconducting magnet. The DTA apparatus could detect the kinetics and thermodynamics of phase transformation with and without a magnetic field. Preliminary results for Al–Al2Cu eutectics are presented. The DTA curves indicate the similarity at several rates regardless of a magnetic field; however, at the same rate, melting transformation seems not to be influenced by a magnetic field, while solidification could be delayed via suppressing nucleation and crystal growth in a magnetic field. It will be believed that the DTA apparatus can be used to investigate the phase transformation of substances of interest in a magnetic field.