Optimization of electromagnetic energy in cold crucible used for directional solidification of TiAl alloy

Jieren Yang, Ruirun Chen, Yanqing Su, Hongsheng Ding, Jingjie Guo and Hengzhi Fu

Energy, 2018, vol. 161, issue C, 143-155

Abstract: Directionally solidified TiAl alloys are one of the most potential candidate for turbine blade in advanced aircraft engines. Electromagnetic (EM) cold crucible directional solidification (CCDS) is a novel technique for preparing large-size TiAl ingot without chemical contamination. In order to improve EM utilization, first the utilization of EM energy in CCDS was evaluated. Then based on the numerical calculation, the absorption power in TiAl alloy that induced by EM energy and the uniformity of EM field were studied, which contributes to the configuration design. Results indicated that the energy utilization in CCDS is improved by optimizing crucible configuration, the start-up power per square mm significantly decreases from 1250 to 500 W/mm2. Finally, a square cold crucible with the section 36 mm × 36 mm was fabricated via a configuration optimization and employed to directionally solidifying TiAl alloy. Both the surface quality and the microstructure were controlled in the processing window, suggesting that the optimization utilization of EM energy in CCDS has been achieved. The results can provide semiquantitative and experimental guidelines on the crucible design and the microstructure control of TiAl alloys from the perspective of EM energy.

Keywords: Cold crucible; Electromagnetic utilization; Configuration optimization; TiAl alloy; Directional solidification; Microstructure (search for similar items in EconPapers)
Date: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544218313732
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:161:y:2018:i:c:p:143-155

DOI: 10.1016/j.energy.2018.07.076

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().