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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

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 (Unpublished)

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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Status: Unpublished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:
CreatorsEmailPitt UsernameORCID
Juan, Hsiang Lingtiffanyjuan1992@gmail.comHSJ4
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairGarcia, Calixto Isaaccigarcia@pitt.educigarcia
Committee MemberWang, Qing-Mingqmwang@engr.pitt.eduqmwang
Committee MemberTan, Sushengsut6@pitt.edusut6
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

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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) [Currently Displayed]

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