TRANSFORMATION-INDUCED PLASTICITY HIGH-ENTROPY ALLOY, AND MANUFACTURING METHOD THEREFOR

Title:

TRANSFORMATION-INDUCED PLASTICITY HIGH-ENTROPY ALLOY, AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2019/083103

Kind Code:

A1

Abstract:

The present invention relates to a transformation-induced plasticity high-entropy alloy capable of obtaining mechanical characteristics improved more than those of a conventional alloy since phase transformation occurs during transformation at a cryogenic temperature. The high-entropy alloy according to the present invention comprises 10-35 at% of Co, 3-15 at% of Cr, 3-15 at% of V, 35-48 at% of Fe, and Ni in an amount less than 25 at%, wherein the high-entropy alloy is mainly composed of FCC phase at room temperature, and plasticity-induced transformation in which at least a part of the FCC phase changes into BCC phase occurs at a cryogenic temperature (-196°C).

Inventors:

LEE BYEONG-JOO (KR)
LEE SUNG-HAK (KR)
SOHN SEOK-SU (KR)
KIM HYOUNG-SEOP (KR)
KIM DONG-GEUN (KR)
JO YONG-HEE (KR)
CHOI WON-MI (KR)

Application Number:

PCT/KR2018/003772

Publication Date:

May 02, 2019

Filing Date:

March 30, 2018

Export Citation:

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Assignee:

POSTECH ACAD IND FOUND (KR)

International Classes:

C22C30/00

Foreign References:

KR20170110018A	2017-10-10
US20170233855A1	2017-08-17
US20080031769A1	2008-02-07
KR20170106016A	2017-09-20
JP2016023352A	2016-02-08

Other References: