J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (1): 23-28.DOI: 10.1016/j.jmst.2018.06.016
• Orginal Article • Previous Articles Next Articles
Zhanxing Chen, Hongsheng Ding*(), Ruirun Chen, Shiqiu Liu, Jingjie Guo, Hengzhi Fu
Received:
2018-01-14
Revised:
2018-06-12
Accepted:
2018-06-27
Online:
2019-01-04
Published:
2019-01-15
Contact:
Ding Hongsheng
Zhanxing Chen, Hongsheng Ding, Ruirun Chen, Shiqiu Liu, Jingjie Guo, Hengzhi Fu. An innovative method for the microstructural modification of TiAl alloy solidified via direct electric current application[J]. J. Mater. Sci. Technol., 2019, 35(1): 23-28.
Fig. 2. Optical micrographs of directionally solidified Ti-48Al-2Cr-2Nb using different direct electric current densities (longitudinal section): (a) 0?mA/mm2, (b) 32?mA/mm2, (c) 64?mA/mm2, (d) 96?mA/mm2.
Fig. 3. Optical micrographs of Ti-48Al-2Cr-2Nb solidified with different direct electric current densities (cross-sectional view): (a) 0?mA/mm2, (b) 32?mA/mm2, (c) 64?mA/mm2, (d) 96?mA/mm2.
Fig. 5. Back-scattered (BSE) microstructures of Ti-48Al-2Cr-2Nb solidified using direct electric current (a) 0?mA/mm2, (b) 32?mA/mm2, (c) 64?mA/mm2, (d) 96?mA/mm2.
Fig. 6. Lamellae structures of Ti-48Al-2Cr-2Nb alloy solidified using direct current and SAED of relevant phases: (a) 0?mA/mm2, (b) 32?mA/mm2, (c) 64?mA/mm2, (d) high magnification view of region A, (e) 96?mA/mm2, (f) high magnification view of region B, (g) SAED of γ phase, (h) SAED of α2 phase, (i) SAED of γ/α2 lamellae.
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