公开(公告)号：US20200303083A1

公开(公告)日：2020-09-24

申请号：US16725197

申请日：2019-12-23

申请人： Dalian University of Technology

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

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

摘要： 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

申请人： DALIAN UNIVERSITY OF TECHNOLOGY

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

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

摘要： 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：US20210108289A1

公开(公告)日：2021-04-15

申请号：US16721551

申请日：2019-12-19

申请人： Dalian University of Technology

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

IPC分类号： C22C9/00 ,  C21D8/02

摘要： The present invention provides a copper alloy with high strength, high electrical conductivity, and high wear resistance and a preparation method thereof. The copper alloy includes 0.7 to 1.5 wt % of Cr, 0.2 to 0.6 wt % Zr and Hf, and Cu as balance. The present invention further discloses a preparation method of the copper, and the method includes the following steps: conducting hot-rolling and then solution treatment, removing a surface oxidation layer, and successively conducting first rolling, first aging treatment, second rolling, and second aging treatment. In the present invention, the preparation method of the copper alloy with high strength, high electrical conductivity, and high wear resistance can effectively avoid mutual interference between hard second phase particles and alloying elements, and the copper alloy with high strength, high electrical conductivity, and high wear resistance prepared by using the method has excellent wear resistance and mechanical properties.

公开(公告)号：US11957057B2

公开(公告)日：2024-04-09

申请号：US17296942

申请日：2020-07-14

申请人： DALIAN UNIVERSITY OF TECHNOLOGY

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

IPC分类号： H10N10/855 ,  C01G23/00 ,  H10N10/01

CPC分类号： H10N10/855 ,  C01G23/006 ,  H10N10/01 ,  C01P2002/54 ,  C01P2002/72 ,  C01P2004/03 ,  C01P2006/32 ,  C01P2006/40

摘要： A CaTiO3-based oxide thermoelectric material and a preparation method thereof are disclosed. The CaTiO3-based oxide thermoelectric material has a chemical formula of Ca1-xLaxTiO3, where 0

公开(公告)号：US11380446B2

公开(公告)日：2022-07-05

申请号：US16725197

申请日：2019-12-23

申请人： Dalian University of Technology

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

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

摘要： 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%.