公开(公告)号：US12276008B2

公开(公告)日：2025-04-15

申请号：US17633962

申请日：2020-08-12

Applicant: HENAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Shizhong Wei ,  Liujie Xu ,  Fangnao Xiao ,  Kunming Pan ,  Yucheng Zhou ,  Xiuqing Li ,  Jiwen Li ,  Xiran Wang ,  Xiaodong Wang ,  Cheng Zhang ,  Chong Chen ,  Feng Mao ,  Mei Xiong ,  Guoshang Zhang ,  Dongliang Jin

IPC: C22C1/04 ,  B21C23/00 ,  B22F1/142 ,  B22F3/10 ,  B22F3/16 ,  B22F9/04 ,  B22F9/24 ,  C22C27/04 ,  C22C28/00 ,  C22F1/18

Abstract: A tungsten-base alloy material and a preparation method therefor. The preparation method comprises: 1) evenly grinding composite powder containing tungsten and zirconium oxide, and then performing annealing treatment at 700-1000° C. to obtain powder A; and 2) grinding and then compression moulding the powder A, and then performing liquid-phase sintering to obtain a tungsten-base alloy blank so as to obtain the tungsten-base alloy material.

公开(公告)号：US12065717B1

公开(公告)日：2024-08-20

申请号：US18603430

申请日：2024-03-13

Applicant: Henan University of Science and Technology

Inventor： Shizhong Wei ,  Lu Yang ,  Xinyuan Zheng ,  Xiran Wang ,  Dong Liang ,  Yang Zhao

IPC: C22C1/05 ,  B22F3/15 ,  C22C1/04 ,  C22C1/051 ,  C22C27/04 ,  C22C32/00

CPC classification number: C22C1/051 ,  B22F3/15 ,  C22C1/045 ,  C22C27/04 ,  C22C32/0052

Abstract: The present disclosure relates to a preparation process of a Ti3AlC2 ceramic phase-toughened molybdenum alloy. The preparation process includes: mixing MoO2 and Ti3AlC2 powders, sieving to obtain a mixed powder, and then conducting high-temperature hydrogen reduction; mixing a resulting reduced powder with a coarse-grained Mo powder to obtain a precursor powder; putting the precursor powder into a cladding material to allow hot-pressed sintering; subjecting an obtained sintered molybdenum alloy to high-temperature treatment and thermoplastic processing in sequence; and annealing an obtained processed molybdenum alloy to obtain a high-strength and high-toughness molybdenum alloy. In the present disclosure, a Ti3AlC2-containing ultrafine powder prepared by reduction is mixed with the commercial coarse-grained molybdenum powder in a certain proportion to obtain the precursor powder. After the precursor powder is subjected to the hot-pressed sintering, the molybdenum alloy can achieve a higher density and finer grains.