公开(公告)号：US20190161865A1

公开(公告)日：2019-05-30

申请号：US15827339

申请日：2017-11-30

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Paul Chipko ,  James Piascik ,  Harry Lester Kington ,  Daniel Greving ,  Patrick Hinke ,  Robert Franconi ,  Bahram Jadidian

IPC: C23C24/04 ,  C22C21/00 ,  B22F3/10 ,  B22F3/24 ,  B22F1/00 ,  B22F5/00 ,  B22D23/00

Abstract: Methods for producing Non-Equilibrium Alloy (NEA) feedstock powders are disclosed, as are methods for fabricating articles from such NEA feedstock powders utilizing Additive Manufacturing (AM) cold spray processes. In various embodiments, the method includes the step or process obtaining an NEA feedstock powder, which is composed of an alloy matrix throughout which a first minority constituent is dispersed. The first minority constituent precipitates from the alloy matrix when the NEA feedstock powder is exposed to temperatures exceeding a critical temperature threshold (TCRITICAL) for a predetermined time period. An AM cold spray process is carried-out to produce a near-net article from the NEA feedstock powder, which is exposed to a maximum temperature (TSPRAY_MAX) during the cold spray process. The near-net article is then further processed to yield a finished article. To substantially preserve the non-equilibrium state of the feedstock powder, TSPRAY_MAX is maintained below TCRITICAL through the cold spray process.