Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting
The mechanical behavior and the microstructural evolution of 17-4 precipitation hardenable (PH) stainless steel processed using selective laser melting have been studied. Test coupons were produced from 17-4 PH stainless steel powder in argon and nitrogen atmospheres. Characterization studies were c...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
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2014
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| Online Access: | https://hdl.handle.net/10356/103371 http://hdl.handle.net/10220/24476 |
| _version_ | 1824454043681947648 |
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| author | Rafi, H. Khalid Pal, Deepankar Patil, Nachiket Starr, Thomas L. Stucker, Brent E. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Rafi, H. Khalid Pal, Deepankar Patil, Nachiket Starr, Thomas L. Stucker, Brent E. |
| author_sort | Rafi, H. Khalid |
| collection | NTU |
| description | The mechanical behavior and the microstructural evolution of 17-4 precipitation hardenable (PH) stainless steel processed using selective laser melting have been studied. Test coupons were produced from 17-4 PH stainless steel powder in argon and nitrogen atmospheres. Characterization studies were carried out using mechanical testing, optical microscopy, scanning electron microscopy, and x-ray diffraction. The results show that post-process heat treatment is required to obtain typically desired tensile properties. Columnar grains of smaller diameters (<2 µm) emerged within the melt pool with a mixture of martensite and retained austenite phases. It was found that the phase content of the samples is greatly influenced by the powder chemistry, processing environment, and grain diameter. |
| first_indexed | 2025-02-19T03:16:02Z |
| format | Journal Article |
| id | ntu-10356/103371 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-02-19T03:16:02Z |
| publishDate | 2014 |
| record_format | dspace |
| spelling | ntu-10356/1033712023-03-04T17:20:09Z Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting Rafi, H. Khalid Pal, Deepankar Patil, Nachiket Starr, Thomas L. Stucker, Brent E. School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering::Control engineering The mechanical behavior and the microstructural evolution of 17-4 precipitation hardenable (PH) stainless steel processed using selective laser melting have been studied. Test coupons were produced from 17-4 PH stainless steel powder in argon and nitrogen atmospheres. Characterization studies were carried out using mechanical testing, optical microscopy, scanning electron microscopy, and x-ray diffraction. The results show that post-process heat treatment is required to obtain typically desired tensile properties. Columnar grains of smaller diameters (<2 µm) emerged within the melt pool with a mixture of martensite and retained austenite phases. It was found that the phase content of the samples is greatly influenced by the powder chemistry, processing environment, and grain diameter. Published version 2014-12-17T02:19:08Z 2019-12-06T21:11:08Z 2014-12-17T02:19:08Z 2019-12-06T21:11:08Z 2014 2014 Journal Article Rafi, H. K., Pal, D., Patil, N., Starr, T. L., & Stucker, B. E. (2014). Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting. Journal of materials engineering and performance, 23(12), 4421-4428. https://hdl.handle.net/10356/103371 http://hdl.handle.net/10220/24476 10.1007/s11665-014-1226-y en Journal of materials engineering and performance © 2014 ASM International. This paper was published in Journal of Materials Engineering and Performance and is made available as an electronic reprint (preprint) with permission of ASM International. The paper can be found at the following official DOI: [http://dx.doi.org/10.1007/s11665-014-1226-y]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 8 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering::Control engineering Rafi, H. Khalid Pal, Deepankar Patil, Nachiket Starr, Thomas L. Stucker, Brent E. Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title | Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title_full | Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title_fullStr | Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title_full_unstemmed | Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title_short | Microstructure and mechanical behavior of 17-4 precipitation hardenable steel processed by selective laser melting |
| title_sort | microstructure and mechanical behavior of 17 4 precipitation hardenable steel processed by selective laser melting |
| topic | DRNTU::Engineering::Mechanical engineering::Control engineering |
| url | https://hdl.handle.net/10356/103371 http://hdl.handle.net/10220/24476 |
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