公开(公告)号：US11380446B2

公开(公告)日：2022-07-05

申请号：US16725197

申请日：2019-12-23

Applicant: Dalian University of Technology

Inventor： Tongmin Wang ,  Yiping Lu ,  Tingju Li ,  Zhiqiang Cao ,  Huanzhi Zhang ,  Jinchuan Jie ,  Huijun Kang ,  Yubo Zhang ,  Zongning Chen ,  Enyu Guo

IPC: G21C3/07 ,  G21F1/12 ,  C22C1/02 ,  C22C30/00 ,  G21F1/08

Abstract: A radiation resistant high-entropy alloy is provided, having an FCC structure, defined by general formula of FeCoNiVMoTixCry, where 0.05≤x≤0.2, 0.05≤y≤0.3, x and y are molar ratios. The radiation resistant high-entropy alloy has excellent irradiation resistance and is subject to radiation hardening saturation at high temperature (600° C.) in a condition of a high dose (1-3×1016 ions/cm2) of helium ion irradiation. A lattice constant of the high-entropy alloy decreases abnormally after irradiation. The high-entropy alloy has a radiation resistance far higher than that of a conventional alloy and has an excellent plasticity and specific strength. In an as-cast condition and at room temperature, a tensile break strength of the high-entropy alloy is higher than 580 MPa, an engineering strain (a tensile elongation) of the high-entropy alloy is greater than 30%.

公开(公告)号：US11279992B2

公开(公告)日：2022-03-22

申请号：US16723332

申请日：2019-12-20

Applicant: DALIAN UNIVERSITY OF TECHNOLOGY

Inventor： Yiping Lu ,  Huanzhi Zhang ,  Tingju Li ,  Tongmin Wang ,  Zhiqiang Cao ,  Jinchuan Jie ,  Huijun Kang ,  Yubo Zhang ,  Zongning Chen ,  Enyu Guo

IPC: C22C30/00 ,  C22C1/02 ,  G21F1/08

Abstract: The present invention provides a radiation resistant high-entropy alloy and a preparation method thereof. A general formula of the radiation resistant high-entropy alloy is TiZrHfVMoTaxNby, where 0.05≤x≤0.25, 0.05≤y≤0.5, and x and y are molar ratios. The preparation method of the radiation resistant high-entropy alloy comprises the following steps: mixing Ti, Zr, Hf, V, Mo, Ta, and Nb in order, and conducting vacuum levitation induction melting or vacuum arc melting, to obtain the radiation resistant high-entropy alloy. The high-entropy alloy in the present invention has an excellent irradiation resistance, and does not suffer radiation hardening damage under simulated helium ion irradiation. When helium bubbles are of same sizes as those of conventional alloy, the bubble density of the high-entropy alloy is far lower than that of the conventional alloy, and the lattice constant thereof decreases abnormally after irradiation.

公开(公告)号：US20200303083A1

公开(公告)日：2020-09-24

申请号：US16725197

申请日：2019-12-23

Applicant: Dalian University of Technology

Inventor： Tongmin Wang ,  Yiping Lu ,  Tingju Li ,  Zhiqiang Cao ,  Huanzhi Zhang ,  Jinchuan Jie ,  Huijun Kang ,  Yubo Zhang ,  Zongning Chen ,  Enyu Guo

IPC: G21C3/07 ,  C22C30/00 ,  C22C1/02 ,  G21F1/12

Abstract: A radiation resistant high-entropy alloy is provided, having an FCC structure, defined by general formula of FeCoNiVMoTixCry, where 0.05≤x≤0.2, 0.05≤y≤0.3, x and y are molar ratios. The radiation resistant high-entropy alloy has excellent irradiation resistance and is subject to radiation hardening saturation at high temperature (600° C.) in a condition of a high dose (1-3×1016 ions/cm2) of helium ion irradiation. A lattice constant of the high-entropy alloy decreases abnormally after irradiation. The high-entropy alloy has a radiation resistance far higher than that of a conventional alloy and has an excellent plasticity and specific strength. In an as-cast condition and at room temperature, a tensile break strength of the high-entropy alloy is higher than 580 MPa, an engineering strain (a tensile elongation) of the high-entropy alloy is greater than 30%.