Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties
Potential applications of steel/nickel bimetals in corrosive environments are of increasing interest. In this study, bimetallic 316L/Hastelloy X was processed via laser powder bed fusion (L-PBF) using different parameters. Results indicated that the rapid cooling of L-PBF reduced the element segrega...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/172808 |
| _version_ | 1811689397902376960 |
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| author | Fan, Haiyang Shi, Qimin Wang, Chengcheng Tian, Yujia Zhou, Kun Yang, Shoufeng |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Fan, Haiyang Shi, Qimin Wang, Chengcheng Tian, Yujia Zhou, Kun Yang, Shoufeng |
| author_sort | Fan, Haiyang |
| collection | NTU |
| description | Potential applications of steel/nickel bimetals in corrosive environments are of increasing interest. In this study, bimetallic 316L/Hastelloy X was processed via laser powder bed fusion (L-PBF) using different parameters. Results indicated that the rapid cooling of L-PBF reduced the element segregation and carbide formation, thus leading to an interface free of cracks. However, also due to rapid solidification, the constituent elements of dissimilar materials at the interface were not mixed properly. With the increasing laser energy density, the interfacial width increased from dozens to hundreds of microns. The epitaxial grain growth from 316L to Hastelloy X was observed under the optimal processing parameters. The microhardness first declined at the front of the 316L side and then continuously increased in the interfacial region with the addition of Hastelloy X. During the tensile tests, the optimally built samples failed at the 316L side, implying the formation of solid bonding between the two metals. |
| first_indexed | 2024-10-01T05:47:28Z |
| format | Journal Article |
| id | ntu-10356/172808 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:47:28Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1728082023-12-20T08:19:10Z Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties Fan, Haiyang Shi, Qimin Wang, Chengcheng Tian, Yujia Zhou, Kun Yang, Shoufeng School of Mechanical and Aerospace Engineering Engineering::Materials Engineering::Mechanical engineering Laser Powder Bed Fusion Epitaxial Grain Growth Potential applications of steel/nickel bimetals in corrosive environments are of increasing interest. In this study, bimetallic 316L/Hastelloy X was processed via laser powder bed fusion (L-PBF) using different parameters. Results indicated that the rapid cooling of L-PBF reduced the element segregation and carbide formation, thus leading to an interface free of cracks. However, also due to rapid solidification, the constituent elements of dissimilar materials at the interface were not mixed properly. With the increasing laser energy density, the interfacial width increased from dozens to hundreds of microns. The epitaxial grain growth from 316L to Hastelloy X was observed under the optimal processing parameters. The microhardness first declined at the front of the 316L side and then continuously increased in the interfacial region with the addition of Hastelloy X. During the tensile tests, the optimally built samples failed at the 316L side, implying the formation of solid bonding between the two metals. The lead author (Haiyang Fan) gratefully appreciates the financial support of the China Scholarship Council (No. 201606050132). 2023-12-20T08:19:10Z 2023-12-20T08:19:10Z 2023 Journal Article Fan, H., Shi, Q., Wang, C., Tian, Y., Zhou, K. & Yang, S. (2023). Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties. Materials Science and Engineering A, 877, 145193-. https://dx.doi.org/10.1016/j.msea.2023.145193 0921-5093 https://hdl.handle.net/10356/172808 10.1016/j.msea.2023.145193 2-s2.0-85160201857 877 145193 en Materials Science and Engineering A © 2023 Elsevier B.V. All rights reserved. |
| spellingShingle | Engineering::Materials Engineering::Mechanical engineering Laser Powder Bed Fusion Epitaxial Grain Growth Fan, Haiyang Shi, Qimin Wang, Chengcheng Tian, Yujia Zhou, Kun Yang, Shoufeng Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title | Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title_full | Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title_fullStr | Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title_full_unstemmed | Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title_short | Laser powder bed fusion of bimetallic stainless steel/nickel-based superalloy: interface and mechanical properties |
| title_sort | laser powder bed fusion of bimetallic stainless steel nickel based superalloy interface and mechanical properties |
| topic | Engineering::Materials Engineering::Mechanical engineering Laser Powder Bed Fusion Epitaxial Grain Growth |
| url | https://hdl.handle.net/10356/172808 |
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