About this Abstract |
Meeting |
MS&T21: Materials Science & Technology
|
Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
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Presentation Title |
Binder Jet Printing of Austenitic 316L Stainless Steel: Processing, Densification, Microstructure, and Mechanical Properties |
Author(s) |
Mohammad Jamalkhani, Amir Mostafaei |
On-Site Speaker (Planned) |
Mohammad Jamalkhani |
Abstract Scope |
Binder jet printing (BJP) refers to the technology in which metal powder is deposited layer-by-layer and selectively joined in each layer with a binder, a polymeric liquid. Sintering plays a vital role when it comes to having a final BJP product with a density of > 99%. This study focuses on examining the effect of sub-solidus and supersolidus liquid phase sintering on the densification, microstructure evolution, and mechanical properties of BJP austenitic 316L stainless steel. A near-fully densified part with density of up to 99%, as well as optimum mechanical properties (e.g., hardness up to 67 HRB, the ultimate strength of 560 MPa, yield strength of 190 MPa, and elongation up to 45%) may be attained by supersolidus liquid phase sintering. Here, a facile non-energy beam additive manufacturing method is introduced to produce stainless steel parts with microstructure and properties similar to cast alloy or powder metallurgy parts. |