Juan, Hsiang Ling
(2017)
EFFECT OF TEMPERATURE RATIO (TS/TM) AND TIME ON THE SINTERING BEHAVIOR OF METALLIC 316L STAINLESS STEEL COUPONS COUPONS PRODUCED USING JET-BINDER TECHNOLOGY.
Master's Thesis, University of Pittsburgh.
(Unpublished)
This is the latest version of this item.
Abstract
The present study investigates the microstructural, grain growth evolution and densification of metallic samples using water-atomized 316L stainless steel powder printed by Jet-Binder technology. To achieve a high final densification, the relationship between temperature ratio (TS/TM), where TS is the sintering temperature and TM is the melting temperature, time and densification behavior have been explored. The green density of metallic parts printed using Jet-Binder additive manufacturing is very low. Therefore, to have higher density and better mechanical properties, sintering heat treatments are needed. During this process, sintering takes place by the atomic transport whereby particle bond together below the melting temperature. The important variables of sintering include: the sintering temperature (TS) and sintering time. In theory, the temperature ratio (TS/TM) will produce the highest densification value, i.e. 98%. In order to get the higher density, understanding and control of overall microstructure is needed. By microstructural control is meant the control of the grain growth behavior sintering density and distribution of pores. During the different sintering stages, different mechanism will be discussed in this work. The major challenge was the control of the variables in the sintering process and its influence on the grain growth behavior and pores morphology.
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Details
| Item Type: |
University of Pittsburgh ETD
|
| Status: |
Unpublished |
| Creators/Authors: |
|
| ETD Committee: |
|
| Date: |
14 June 2017 |
| Date Type: |
Publication |
| Defense Date: |
7 April 2017 |
| Approval Date: |
14 June 2017 |
| Submission Date: |
10 April 2017 |
| Access Restriction: |
1 year -- Restrict access to University of Pittsburgh for a period of 1 year. |
| Number of Pages: |
99 |
| Institution: |
University of Pittsburgh |
| Schools and Programs: |
Swanson School of Engineering > Materials Science and Engineering |
| Degree: |
MS - Master of Science |
| Thesis Type: |
Master's Thesis |
| Refereed: |
Yes |
| Uncontrolled Keywords: |
Additive manufacturing. Binder-Jetting 3D printing. 316L stainless steel. Sintering. Temperature ratio. |
| Date Deposited: |
14 Jun 2017 13:06 |
| Last Modified: |
14 Jun 2018 05:15 |
| URI: |
http://d-scholarship.pitt.edu/id/eprint/31402 |
Available Versions of this Item
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EFFECT OF TEMPERATURE RATIO (TS/TM) AND TIME ON THE SINTERING BEHAVIOR OF METALLIC 316L STAINLESS STEEL COUPONS COUPONS PRODUCED USING JET-BINDER TECHNOLOGY. (deposited 14 Jun 2017 13:06)
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