公开(公告)号：US20220282356A1

公开(公告)日：2022-09-08

申请号：US17630169

申请日：2020-10-22

Applicant: Jiangsu University

Inventor： Xizhou KAI ,  Yutao ZHAO ,  Yanjie PENG ,  Gang CHEN ,  Xiaojing XU ,  Lin WU ,  Shuoming HUANG ,  Ruikun CHEN

IPC: C22C21/00 ,  C22C1/10 ,  C22C32/00

Abstract: The present invention relates to an aluminum matrix composite (AMC), and particularly to a method and apparatus for preparing an AMC with a high strength, a high toughness, and a high neutron absorption. The present invention combines a high-neutron-absorption and highly stable micro-B4C extrinsic reinforcement with an in-situ nano-reinforcement containing elements B, Cd, and Hf and having high neutron capture ability, achieves efficient absorption of neutrons by using the large cross-sectional area of the micro-reinforcement, achieves effective capture of rays penetrating gaps of the micro-reinforcement by means of the highly dispersed in-situ nano-reinforcement, and significantly improves the toughness of the composite material by means of the high-dispersion toughening effect of the nano-reinforcement, obtaining a particle-reinforced aluminum matrix composite (PAMC) having high toughness and high neutron absorption.

公开(公告)号：US20230193427A1

公开(公告)日：2023-06-22

申请号：US18008669

申请日：2022-02-11

Applicant: JIANGSU UNIVERSITY

Inventor： Yutao ZHAO ,  Gang CHEN ,  Chuang GUAN ,  Xizhou KAI ,  Wei QIAN ,  Luyao HUANG ,  Xu GAO ,  Liwei JIN

IPC: C22C21/00 ,  C22C1/02 ,  C22C1/10 ,  C22F1/04

CPC classification number: C22C21/00 ,  C22C1/026 ,  C22C1/101 ,  C22C1/1084 ,  C22C1/1094 ,  C22F1/04

Abstract: A graphene and in-situ nano-ZrB2 particle-co-reinforced aluminum matrix composite (AMC) and a preparation method thereof are provided. The preparation method includes: heating an aluminum alloy for melting, adding potassium fluoroborate and potassium fluorozirconate to produce ZrB2 particles in-situ, additionally adding a mixture of pre-prepared copper-coated graphene and an aluminum powder, and stirring with an electromagnetic field for uniform dispersion; and ultrasonically treating the resulting melt to improve the dispersion of the in-situ nano-ZrB2 particles and the graphene, casting for molding to obtain a casting, and subjecting the casting to homogenization and rolling for deformation to obtain the graphene and in-situ nano-ZrB2 particle-co-reinforced AMC. The in-situ generation of the reinforcement nano-ZrB2 particles in an aluminum alloy melt increases the number of interfaces in the composite and also increases the dislocation density.

公开(公告)号：US20240200167A1

公开(公告)日：2024-06-20

申请号：US18287188

申请日：2021-06-03

Applicant: Jiangsu University

Inventor： Yutao ZHAO ,  Xizhou KAI ,  Gang CHEN ,  Yanjie PENG ,  Ran TAO ,  Xiangfeng LIANG

IPC: C22C1/10 ,  B22D11/00 ,  B22D11/06 ,  B22D11/115 ,  C22C21/00 ,  C22C21/02

CPC classification number: C22C1/1052 ,  B22D11/003 ,  B22D11/0622 ,  B22D11/115 ,  C22C21/00 ,  C22C21/02

Abstract: An AMC, and in particular to an AMC with high strength, high toughness, high thermal conductivity, and good weldability for a 5G base station and a preparation method thereof. A strip of the AMC with high strength, high toughness, high thermal conductivity, and good weldability for a 5G base station can be prepared by an electromagnetically and ultrasonically-controlled twin-roll continuous casting device developed and designed based on chemical composition designing, in-situ nanoparticle strengthening and refinement, and REM microalloying. The composite strip prepared by this technology has fine grains, nano-REM precipitated phases in grains, and in-situ nano-ceramic particles with high thermal conductivity at grain boundaries, which significantly improves strength, toughness, and thermal conductivity of the alloy at room temperature, and increases a grain boundary content and effectively improves roll cold weldability of the alloy strip since the alloy composition design with a low melting point and the significant grain refinement.

公开(公告)号：US20240200166A1

公开(公告)日：2024-06-20

申请号：US18287187

申请日：2021-06-03

Applicant: Jiangsu University

Inventor： Xizhou KAI ,  Yutao ZHAO ,  Yanjie PENG ,  Gang CHEN ,  Ruikun CHEN ,  Lin WU ,  Ran TAO ,  Xiangfeng LIANG

IPC: C22C1/10 ,  B22D11/00 ,  B22D11/114 ,  C22C21/00 ,  C22C21/10 ,  C22F1/00 ,  C22F1/053

CPC classification number: C22C1/1052 ,  B22D11/003 ,  B22D11/114 ,  C22C21/003 ,  C22C21/10 ,  C22F1/002 ,  C22F1/053

Abstract: The present disclosure relates to an aluminum alloy material, and specifically to a weldable in-situ nano-strengthened rare-earth metal (REM)-containing aluminum alloy with high strength and toughness and a preparation method thereof. In the present disclosure, in-situ nano-ceramic particles and REMs simultaneously introduced into an Al—Zn—Mg alloy can effectively refine the grains and significantly improve the strength and toughness of the alloy; and REM-containing nano-precipitated phases and in-situ nanoparticles distributed in the grains or at grain boundaries can also significantly increase a recrystallization temperature of the alloy, effectively inhibit the dynamic recovery, reduce the re-dissolution of alloying elements, and improve the weldability of the alloy.