US 12,377,467 B2
Spatial control of material properties in additive manufacturing
Nathan Brad Crane, Springville, UT (US); and Tracy Wendell Nelson, Springville, UT (US)
Assigned to Brigham Young University, Provo, UT (US)
Appl. No. 17/310,544
Filed by Brigham Young University (BYU), Provo, UT (US)
PCT Filed Apr. 24, 2020, PCT No. PCT/US2020/029839
§ 371(c)(1), (2) Date Aug. 10, 2021,
PCT Pub. No. WO2020/223124, PCT Pub. Date Nov. 5, 2020.
Claims priority of provisional application 62/841,090, filed on Apr. 30, 2019.
Prior Publication US 2022/0062996 A1, Mar. 3, 2022
Int. Cl. B22F 10/50 (2021.01); B22F 10/28 (2021.01); B22F 12/00 (2021.01); B28B 1/00 (2006.01); B29C 64/153 (2017.01); B29C 64/188 (2017.01); B29C 64/364 (2017.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B22F 10/50 (2021.01) [B22F 10/28 (2021.01); B22F 12/00 (2021.01); B28B 1/001 (2013.01); B29C 64/153 (2017.08); B29C 64/188 (2017.08); B29C 64/364 (2017.08); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 21 Claims
OG exemplary drawing
 
1. A method for additive manufacturing, the method comprising:
depositing a liquid on a first portion of an article, the liquid including a dopant, the article including a feedstock material;
heating, at a first temperature, the article to, at least one of, evaporate or decompose the liquid, the heating at the first temperature leaving the dopant on the first portion of the article; and
after heating at the first temperature:
heating, at a second temperature different than the first temperature, the article, the heating at the second temperature resulting in a portion of the feedstock material melting and the dopant mixing with the portion of the feedstock material in a second portion of the article, the second portion of the article including the first portion of the article.