Title:
METHOD FOR IMPROVING PROCESSABILITY OF HIGH-ENTROPY ALLOY TO WHICH AL IS ADDED
Document Type and Number:
WIPO Patent Application WO/2018/203601
Kind Code:
A1
Abstract:
The purpose of the present invention relating to a method for improving the processability of a high-entropy alloy to which AL is added is to resolve the problem of limitations of enlargement and industrial application according to the deterioration of processability caused by the brittleness of an high-entropy alloy to which AL is added and which has a BCC phase formed at a low temperature. The method according to the present invention performs treatment before processing a high-entropy alloy having a BCC phase formed by the addition of Al in an FCC single phase, and then performs processing, the treatment comprising the steps of: heating the high-entropy alloy at at least a temperature at which the phase fraction of the BCC phase thereof is 6% or less, and maintaining the same until the phase fraction is reached; and performing cooling such that the BCC phase fraction of the heated high-entropy alloy is maintained. The method enables enlargement of an alloy and processing thereof into a desired shape by resolving weak processability of the high-entropy alloy to which AL is added and which is effective for ensuring price competitiveness and reducing weight, and thus can increase the industrial applicability of the high-entropy alloy to which AL is added.
Inventors:
MOON JONG-UN (KR)
LEE BYEONG-JOO (KR)
BAE JAE-WUNG (KR)
CHOI WON-MI (KR)
JANG MIN-JI (KR)
KIM HYOUNG-SEOP (KR)
LEE BYEONG-JOO (KR)
BAE JAE-WUNG (KR)
CHOI WON-MI (KR)
JANG MIN-JI (KR)
KIM HYOUNG-SEOP (KR)
Application Number:
PCT/KR2018/003663
Publication Date:
November 08, 2018
Filing Date:
March 28, 2018
Export Citation:
Assignee:
POSTECH ACAD IND FOUND (KR)
International Classes:
C22C30/00; C22F1/00
Foreign References:
| CN103194657A | 2013-07-10 | |||
| KR20170027520A | 2017-03-10 | |||
| JP2016023351A | 2016-02-08 | |||
| KR20160130660A | 2016-11-14 | |||
| US20130108502A1 | 2013-05-02 |
Other References:
GORBAN ET AL.: "Influence of Deformation on the Structure and the Mechanical Properties of a High-entropy Fe25Cr20Ni20CoIOMnl5A110 Alloy", RUSSIAN METALLURGY, vol. 2014, no. 10, 18 February 2015 (2015-02-18), pages 773 - 777, XP035452137
Attorney, Agent or Firm:
IAM PATENT FIRM (KR)
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