The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2019
Filed:
Feb. 09, 2017
Seoul National University R&db Foundation, Seoul, KR;
Eun Soo Park, Suwon, KR;
Hyun Seok Oh, Seoul, KR;
Sangjun Kim, Seoul, KR;
Kooknoh Yoon, Seoul, KR;
Chae Woo Ryu, Suwon, KR;
SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION, Seoul, KR;
Abstract
The present invention relates to a high entropy alloy having more improved mechanical properties by controlling contents of additive elements in a NiCoFeMnCr 5-element alloy to control stacking fault energy, thereby controlling stability of a γ austenite phase to control a transformation mechanism, wherein the stacking fault energy is controlled in a composition range of NiCoFeMnCr(a+b+c+d+e=100, 1≤a≤50, 1≤b≤50, 1≤c≤50, 1≤d≤50, 10≤e≤25, and 77a−42b−22c+73d−100e+2186≤1500), and thus, the γ austenite phase exhibits a twin-induced plasticity (TWIP) property or a transformation induced-plasticity (TRIP) property in which the γ austenite phase is subjected to phase transformation into an ε martensite phase or an α' martensite phase, under stress, thereby having improved strength and elongation at the same time to have excellent mechanical properties.