Patents by Inventor Yong-hee JO

Yong-hee JO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Transformation-induced plasticity high-entropy alloy and preparation method thereof
    Patent number: 11313018
    Abstract: Present invention is about a transformation-induced plasticity high-entropy alloy which can provide improved mechanical properties compared to those obtained by conventional methods, due to the phase transformation occurring at the time of deformation at a cryogenic temperature. According to the present invention, the high-entropy alloy (HEA) includes 10-35 at % of Co, 3-15 at % of Cr, 3-15 at % of V, 35-48 at % of Fe, and 0-25 at % of Ni (exclusive of 25), and mainly consists of an FCC phase at room temperature, wherein transformation-induced plasticity, in which at least part of the FCC phase changes to a BCC phase, occurs at a cryogenic temperature (?196° C.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: April 26, 2022
    Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Byeong-joo Lee, Sung-hak Lee, Seok-su Sohn, Hyoung-seop Kim, Dong-geun Kim, Yong-hee Jo, Won-mi Choi
  • TRANSFORMATION-INDUCED PLASTICITY HIGH-ENTROPY ALLOY AND PREPARATION METHOD THEREOF
    Publication number: 20210269900
    Abstract: Present invention is about a transformation-induced plasticity high-entropy alloy which can provide improved mechanical properties compared to those obtained by conventional methods, due to the phase transformation occurring at the time of deformation at a cryogenic temperature. According to the present invention, the high-entropy alloy (HEA) includes 10-35 at % of Co, 3-15 at % of Cr, 3-15 at % of V, 35-48 at % of Fe, and 0-25 at % of Ni (exclusive of 25), and mainly consists of an FCC phase at room temperature, wherein transformation-induced plasticity, in which at least part of the FCC phase changes to a BCC phase, occurs at a cryogenic temperature (?196° C.
    Type: Application
    Filed: March 30, 2018
    Publication date: September 2, 2021
    Applicant: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Byeong-joo LEE, Sung-hak LEE, Seok-su SOHN, Hyoung-seop KIM, Dong-geun KIM, Yong-hee JO, Won-mi CHOI