Imperial College London
Portrait Picture

DrJunJiang

Faculty of Engineering, Department of Mechanical Engineering

Senior Lecturer
 
 
 
//

Contact

 

jun.jiang

 
 
//

Location

 

523City and Guilds BuildingSouth Kensington Campus

//

Summary

 

Publications

Citation

BibTex format

@article{Liu:2022:10.1016/j.msea.2022.144290,
author = {Liu, Y and Zhang, C and Wang, Y and Xu, X and Zhu, H and Jiang, J},
doi = {10.1016/j.msea.2022.144290},
journal = {Materials Science and Engineering: A},
pages = {1--11},
title = {Reveal the hot deformation behaviour and microstructure evolution in additively manufactured 316L stainless steel},
url = {http://dx.doi.org/10.1016/j.msea.2022.144290},
volume = {861},
year = {2022}
}
Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The novel hybrid manufacturing process incorporating additive manufacturing (AM) with a subsequent hot compression process has been proposed and applied to 316L stainless steel (316L SS). Compared to the conventional wrought 316L SS, the significantly coarser grain size was characterized in the directly AMed specimen, resulting in unacceptable mechanical properties as safety-critical parts. These coarse grains can be refined through the subsequent hot compression process. However, the detailed grain refinement process in these AMed materials has not been exploited. This motivates the study of the grain refinement of AM specimens through dynamic recrystallization (DRX) in hot compression. Hot compression was applied on AMed 316L SS specimens at temperatures from 800 °C to 1000 °C and different strain rates of 0.01 s−1, 0.1 s−1 and 1 s−1 by Gleeble. The results were compared with conventional wrought-annealed 316L SS specimens. To explain the flow stress behaviour, the underlying grain size, orientations, morphologies, and geometrically necessary dislocation (GND) density distribution and evolution were characterized by the electron backscatter diffraction (EBSD). The results suggest that the initial microstructure difference plays a dominant role in the flow stress response, and the DRX behaves very differently in these AMed and wrought-annealed specimens.
AU  - Liu,Y
AU  - Zhang,C
AU  - Wang,Y
AU  - Xu,X
AU  - Zhu,H
AU  - Jiang,J
DO  - 10.1016/j.msea.2022.144290
EP  - 11
PY  - 2022///
SN  - 0921-5093
SP  - 1
TI  - Reveal the hot deformation behaviour and microstructure evolution in additively manufactured 316L stainless steel
T2  - Materials Science and Engineering: A
UR  - http://dx.doi.org/10.1016/j.msea.2022.144290
UR  - https://www.sciencedirect.com/science/article/pii/S0921509322016707?via%3Dihub
UR  - http://hdl.handle.net/10044/1/101119
VL  - 861
ER  -
Download