Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion
The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and flexible processing of multi-metal parts to meet t...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
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| Online Access: | https://hdl.handle.net/10356/174747 |
| _version_ | 1811679159172202496 |
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| author | Hoo, Zhiong Sheng Xiao, Zhongmin Yao, Liming Jing, Bozhong Jin, Chuanjie Tang, Chao |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Hoo, Zhiong Sheng Xiao, Zhongmin Yao, Liming Jing, Bozhong Jin, Chuanjie Tang, Chao |
| author_sort | Hoo, Zhiong Sheng |
| collection | NTU |
| description | The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and flexible processing of multi-metal parts to meet these stringent demands. This study is aimed at investigating the interface hardness between CoCrMo/IN625 to determine optimal processing parameters that can be utilized in manufacturing reliable and durable multi-metal parts. The result indicates that when the volumetric energy density, Ev, is at or below 20 J/mm3, microfluidic forces are unable to sufficiently diffuse between the two metals, leading to insufficient diffusion, and the high hardness CoCrMo acts as a support, resulting in a significantly higher interface hardness. As Ev increases, intense recoil pressure within the microfluidic forces disrupts the melt pool, allowing for full diffusion between the two metals. The fully diffused high-hardness CoCrMo has been diluted by the low-hardness IN625, thus reducing the interface hardness. Considering the interface hardness, strength, and printing efficiency (time and energy consumption), we recommend a range of 35 J/mm3 < Ev ≤ 75 J/mm3. In this range, the average values for interface hardness and tensile strength of the samples are approximately 382 HV and 903 MPa, respectively. |
| first_indexed | 2024-10-01T03:04:43Z |
| format | Journal Article |
| id | ntu-10356/174747 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:04:43Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1747472024-04-13T16:49:07Z Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion Hoo, Zhiong Sheng Xiao, Zhongmin Yao, Liming Jing, Bozhong Jin, Chuanjie Tang, Chao School of Mechanical and Aerospace Engineering Institute of High Performance Computing, A*STAR Engineering Additive manufacturing Petrochemical The nuclear and petrochemical industries often require multi-metal parts that are corrosion-resistant, heat-resistant, and possess high strength to enhance equipment safety and reduce downtime. Additive manufacturing technology enables the rapid and flexible processing of multi-metal parts to meet these stringent demands. This study is aimed at investigating the interface hardness between CoCrMo/IN625 to determine optimal processing parameters that can be utilized in manufacturing reliable and durable multi-metal parts. The result indicates that when the volumetric energy density, Ev, is at or below 20 J/mm3, microfluidic forces are unable to sufficiently diffuse between the two metals, leading to insufficient diffusion, and the high hardness CoCrMo acts as a support, resulting in a significantly higher interface hardness. As Ev increases, intense recoil pressure within the microfluidic forces disrupts the melt pool, allowing for full diffusion between the two metals. The fully diffused high-hardness CoCrMo has been diluted by the low-hardness IN625, thus reducing the interface hardness. Considering the interface hardness, strength, and printing efficiency (time and energy consumption), we recommend a range of 35 J/mm3 < Ev ≤ 75 J/mm3. In this range, the average values for interface hardness and tensile strength of the samples are approximately 382 HV and 903 MPa, respectively. Published version This research was funded by Singapore Centre for 3D Printing (SC3DP) [001163-00010]; and State Key Laboratory of Robotics and Systems (HIT) [SKLRS-2023-KF-24]; and International scientific and technological cooperation project (HIT-ZRI) [GUIQ0700500523]. 2024-04-09T02:22:10Z 2024-04-09T02:22:10Z 2024 Journal Article Hoo, Z. S., Xiao, Z., Yao, L., Jing, B., Jin, C. & Tang, C. (2024). Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion. Micromachines, 15(1), 162-. https://dx.doi.org/10.3390/mi15010162 2072-666X https://hdl.handle.net/10356/174747 10.3390/mi15010162 38276861 2-s2.0-85183324622 1 15 162 en SC3DP 001163-00010 Micromachines © 2024 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). application/pdf |
| spellingShingle | Engineering Additive manufacturing Petrochemical Hoo, Zhiong Sheng Xiao, Zhongmin Yao, Liming Jing, Bozhong Jin, Chuanjie Tang, Chao Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title | Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title_full | Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title_fullStr | Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title_full_unstemmed | Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title_short | Interface hardness analysis of between IN625 and CoCrMo manufactured by pulsed wave laser powder bed fusion |
| title_sort | interface hardness analysis of between in625 and cocrmo manufactured by pulsed wave laser powder bed fusion |
| topic | Engineering Additive manufacturing Petrochemical |
| url | https://hdl.handle.net/10356/174747 |
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