High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430
Ferritic stainless steels (FSSs) have attracted considerable attention due to their excellent corrosion resistance and significantly lower cost compared with nickel-bearing austenitic stainless steels. However, the high-temperature wear behavior of additively manufactured FSS 430 has not yet been th...
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MDPI AG
2025-06-01
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| Online Access: | https://www.mdpi.com/2072-666X/16/7/752 |
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| author | Samsub Byun Hyun-Ki Kang Jongyeob Lee Namhyun Kang Seunghun Lee |
| author_facet | Samsub Byun Hyun-Ki Kang Jongyeob Lee Namhyun Kang Seunghun Lee |
| author_sort | Samsub Byun |
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| description | Ferritic stainless steels (FSSs) have attracted considerable attention due to their excellent corrosion resistance and significantly lower cost compared with nickel-bearing austenitic stainless steels. However, the high-temperature wear behavior of additively manufactured FSS 430 has not yet been thoroughly investigated. This study aims to examine the microstructural characteristics and wear properties of laser powder directed energy deposition (LP-DED) FSS 430 fabricated under varying laser powers and hatch distances. Wear testing was conducted at 25 °C and 300 °C after subjecting the samples to solution heat treating at 815 °C and 980 °C for 1 h, followed by forced fan cooling. For comparison, an AISI 430 commercial plate was also tested under the same test conditions. The microstructural evolution and worn surfaces were analyzed using SEM-EDS and EBSD techniques. The wear performance was evaluated based on the friction coefficients and cross-sectional profiles of wear tracks, including wear volume, maximum depth, and scar width. The average friction coefficients (AFCs) of the samples solution heat treated at 980 °C were higher than those treated at 815 °C. Additionally, the AFCs increased with hatch distance at both testing temperatures. A strong correlation was observed between Rockwell hardness and wear resistance, indicating that higher hardness generally results in improved wear performance. |
| format | Article |
| id | doaj-art-e36e499bb35c4c62a99505909eaeedd6 |
| institution | DOAJ |
| issn | 2072-666X |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Micromachines |
| spelling | doaj-art-e36e499bb35c4c62a99505909eaeedd62025-08-20T03:08:10ZengMDPI AGMicromachines2072-666X2025-06-0116775210.3390/mi16070752High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430Samsub Byun0Hyun-Ki Kang1Jongyeob Lee2Namhyun Kang3Seunghun Lee4R&D Center, Turbo Power Tech, #107 Dasan-ro, Saha-gu, Busan 49488, Republic of KoreaR&D Center, Turbo Power Tech, #107 Dasan-ro, Saha-gu, Busan 49488, Republic of KoreaR&D Center, Turbo Power Tech, #107 Dasan-ro, Saha-gu, Busan 49488, Republic of KoreaDepartment of Materials Science and Engineering, Pusan National University, Busandaehak-ro 63beon-gil, Geumjeong-gu, Busan 46241, Republic of KoreaWelding & Joining Development Team, TESONE Co., Ltd., #37 Nakdong-daero 550beon-gil, Saha-gu, Busan 49315, Republic of KoreaFerritic stainless steels (FSSs) have attracted considerable attention due to their excellent corrosion resistance and significantly lower cost compared with nickel-bearing austenitic stainless steels. However, the high-temperature wear behavior of additively manufactured FSS 430 has not yet been thoroughly investigated. This study aims to examine the microstructural characteristics and wear properties of laser powder directed energy deposition (LP-DED) FSS 430 fabricated under varying laser powers and hatch distances. Wear testing was conducted at 25 °C and 300 °C after subjecting the samples to solution heat treating at 815 °C and 980 °C for 1 h, followed by forced fan cooling. For comparison, an AISI 430 commercial plate was also tested under the same test conditions. The microstructural evolution and worn surfaces were analyzed using SEM-EDS and EBSD techniques. The wear performance was evaluated based on the friction coefficients and cross-sectional profiles of wear tracks, including wear volume, maximum depth, and scar width. The average friction coefficients (AFCs) of the samples solution heat treated at 980 °C were higher than those treated at 815 °C. Additionally, the AFCs increased with hatch distance at both testing temperatures. A strong correlation was observed between Rockwell hardness and wear resistance, indicating that higher hardness generally results in improved wear performance.https://www.mdpi.com/2072-666X/16/7/752additive manufacturingdirected energy depositionferritic stainless steel 430wear resistancechrome carbide precipitationhigh-temperature tribology |
| spellingShingle | Samsub Byun Hyun-Ki Kang Jongyeob Lee Namhyun Kang Seunghun Lee High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 Micromachines additive manufacturing directed energy deposition ferritic stainless steel 430 wear resistance chrome carbide precipitation high-temperature tribology |
| title | High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 |
| title_full | High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 |
| title_fullStr | High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 |
| title_full_unstemmed | High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 |
| title_short | High-Temperature Wear Properties of Laser Powder Directed Energy Deposited Ferritic Stainless Steel 430 |
| title_sort | high temperature wear properties of laser powder directed energy deposited ferritic stainless steel 430 |
| topic | additive manufacturing directed energy deposition ferritic stainless steel 430 wear resistance chrome carbide precipitation high-temperature tribology |
| url | https://www.mdpi.com/2072-666X/16/7/752 |
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