Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure
Balancing strength and ductility presents a significant challenge in the γ′ phase-strengthened Nickel-based superalloys fabricated by laser beam powder bed fusion. This study introduced stable multi-scale heterogeneous microstructure through heat treatment for the first time, which achieves an excel...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-11-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424027200 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850119866329071616 |
|---|---|
| author | Yazhou Zhang Zuming Liu Daoyan Jiang Shupeng Ye Tao Liu Runxing Zhou |
| author_facet | Yazhou Zhang Zuming Liu Daoyan Jiang Shupeng Ye Tao Liu Runxing Zhou |
| author_sort | Yazhou Zhang |
| collection | DOAJ |
| description | Balancing strength and ductility presents a significant challenge in the γ′ phase-strengthened Nickel-based superalloys fabricated by laser beam powder bed fusion. This study introduced stable multi-scale heterogeneous microstructure through heat treatment for the first time, which achieves an excellent strength-ductility synergy. The formation mechanism of heterogeneous microstructure during heat treatment and its correlation with mechanical properties are discussed in detail. The results show that the heat treatment leads to the formation of a multi-scale heterogeneous microstructure, including bimodal grains, nano-sized γ′ phases and twins, which activated several strengthening mechanisms, significantly enhancing strength. During the tensile process, stress-induced stacking faults, Lomer-Cottrell locks, and secondary twins activate multiple plastic deformation modes. This effectively improves the work-hardening capacity while maintaining good ductility. The heat treatment process designed in this study achieved a good balance between strength (yield strength: 1281 ± 8 MPa, ultimate tensile strength: 1609 ± 7 MPa) and ductility (16.6 ± 0.3%). These findings propose a new strategy for development of precipitation-strengthened superalloys. |
| format | Article |
| id | doaj-art-692502d1b8c74aa89203da2f8e7d853f |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-692502d1b8c74aa89203da2f8e7d853f2025-08-20T02:35:32ZengElsevierJournal of Materials Research and Technology2238-78542024-11-0133100221003310.1016/j.jmrt.2024.11.192Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructureYazhou Zhang0Zuming Liu1Daoyan Jiang2Shupeng Ye3Tao Liu4Runxing Zhou5State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaCorresponding author.; State Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaState Key Laboratory of Powder Metallurgy, Central South University, Changsha, 410083, ChinaBalancing strength and ductility presents a significant challenge in the γ′ phase-strengthened Nickel-based superalloys fabricated by laser beam powder bed fusion. This study introduced stable multi-scale heterogeneous microstructure through heat treatment for the first time, which achieves an excellent strength-ductility synergy. The formation mechanism of heterogeneous microstructure during heat treatment and its correlation with mechanical properties are discussed in detail. The results show that the heat treatment leads to the formation of a multi-scale heterogeneous microstructure, including bimodal grains, nano-sized γ′ phases and twins, which activated several strengthening mechanisms, significantly enhancing strength. During the tensile process, stress-induced stacking faults, Lomer-Cottrell locks, and secondary twins activate multiple plastic deformation modes. This effectively improves the work-hardening capacity while maintaining good ductility. The heat treatment process designed in this study achieved a good balance between strength (yield strength: 1281 ± 8 MPa, ultimate tensile strength: 1609 ± 7 MPa) and ductility (16.6 ± 0.3%). These findings propose a new strategy for development of precipitation-strengthened superalloys.http://www.sciencedirect.com/science/article/pii/S2238785424027200Nickel-based superalloysHeat treatmentHeterogeneous microstructureLaser beam powder bed fusionStrength-ductility synergy |
| spellingShingle | Yazhou Zhang Zuming Liu Daoyan Jiang Shupeng Ye Tao Liu Runxing Zhou Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure Journal of Materials Research and Technology Nickel-based superalloys Heat treatment Heterogeneous microstructure Laser beam powder bed fusion Strength-ductility synergy |
| title | Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure |
| title_full | Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure |
| title_fullStr | Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure |
| title_full_unstemmed | Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure |
| title_short | Achieving exceptional strength-ductility synergy in laser beam powder bed fusion René 104ScY superalloy through induced heterogeneous microstructure |
| title_sort | achieving exceptional strength ductility synergy in laser beam powder bed fusion rene 104scy superalloy through induced heterogeneous microstructure |
| topic | Nickel-based superalloys Heat treatment Heterogeneous microstructure Laser beam powder bed fusion Strength-ductility synergy |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424027200 |
| work_keys_str_mv | AT yazhouzhang achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure AT zumingliu achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure AT daoyanjiang achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure AT shupengye achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure AT taoliu achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure AT runxingzhou achievingexceptionalstrengthductilitysynergyinlaserbeampowderbedfusionrene104scysuperalloythroughinducedheterogeneousmicrostructure |