公开(公告)号：US20170216919A1

公开(公告)日：2017-08-03

申请号：US15514826

申请日：2016-03-08

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Zuming LIU ,  Pengfei SU ,  Boyun HUANG ,  Qinglong DUAN ,  Yang GUO ,  Mengmei MA

IPC: B22F3/12 ,  C22C1/04

CPC classification number: B22F3/12 ,  B22F9/04 ,  B22F2998/10 ,  C22C1/04 ,  C22C1/0433 ,  B22F2009/043 ,  B22F3/15 ,  B22F3/20 ,  B22F3/105

Abstract: A method for removing prior particle boundaries and hole defects of a powder metallurgy high-temperature alloy. The method includes performing mechanical ball milling treatment on an atomized powder, thermosetting the powder to form a shape, and preparing a powder metallurgy high-temperature alloy.

公开(公告)号：US20180056398A1

公开(公告)日：2018-03-01

申请号：US15556619

申请日：2016-03-08

Applicant: CENTRAL SOUTH UNIVERSITY

Inventor： Zuming LIU ,  Pengfei SU ,  Boyun HUANG ,  Qinglong DUAN ,  Mengmei MA ,  Yang GUO ,  Shiqi CHEN

IPC: B22F9/04 ,  B02C17/20 ,  B02C25/00

CPC classification number: B22F9/04 ,  B02C17/20 ,  B02C25/00 ,  B22F2009/043 ,  B22F2998/10 ,  B22F2999/00 ,  C22C1/0433 ,  C22C19/056 ,  B22F9/082 ,  B22F2201/10

Abstract: The invention relates to a method for eliminating hollow defects in atomized superalloy powder, and pertains to the field of powder metallurgy materials. A ball-milling processing is conducted on the atomized alloy powder to eliminate the hollow defect, obtain solid powder and increase powder utilization efficiency. By controlling mill ball diameters, mass ratio of mill balls with different diameters, mass ratio of ball to powder and ball milling time, a multi-directional impact on the powder is achieved, thereby control powder shape and obtain solid spherical powder. The invention eliminates powder hollow defect by using ball milling process and equipment. This invention with high powder utilization efficiency, short ball milling time and simple operating process, can be used for large-scale preparation and application.