Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy
Hardness reflects the comprehensive mechanical properties of materials, and its evolution during a wide temperature range reflects high-temperature performance. This study investigates the evolution of the high-temperature hardness of a nickel-based superalloy Ni16Cr13Co4Mo. Various thermal cycles f...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-03-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424003867 |
| _version_ | 1797247793358700544 |
|---|---|
| author | Yang Zhang Yueming Fan Kaili Feng Chaoze Lu Yihan Wang Tianmin Shao |
| author_facet | Yang Zhang Yueming Fan Kaili Feng Chaoze Lu Yihan Wang Tianmin Shao |
| author_sort | Yang Zhang |
| collection | DOAJ |
| description | Hardness reflects the comprehensive mechanical properties of materials, and its evolution during a wide temperature range reflects high-temperature performance. This study investigates the evolution of the high-temperature hardness of a nickel-based superalloy Ni16Cr13Co4Mo. Various thermal cycles featuring distinct peak heating temperatures were utilized to examine the variation of Vickers hardness with temperature. The effect of precipitated phases (specifically the γ′ phase) in the superalloy on high-temperature hardness and the deformation mechanism of the alloy was analyzed. The results show that the high-temperature hardness of the nickel-based superalloy decreases as temperature increases. However, the hardness after thermal cycles demonstrates an increase which is determined by the peak heating temperature. The increased hardness following thermal cycles is attributed to the reduction in size and the increase in the volume fraction of secondary γ′. Detailed TEM observation revealed that as the peak temperature increases, the deformation mechanism transforms from dislocation pile-ups in the γ matrix, dislocation and stacking fault shearing, microtwining in γ and γ′ phases to stacking fault shearing and piled-up dislocations in γ phase. As the result, hardness decreases as temperature increases. |
| first_indexed | 2024-03-07T22:54:05Z |
| format | Article |
| id | doaj.art-38566cbbe2af4823a3e0fb177018d5d3 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-24T20:04:20Z |
| publishDate | 2024-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-38566cbbe2af4823a3e0fb177018d5d32024-03-24T06:58:17ZengElsevierJournal of Materials Research and Technology2238-78542024-03-012937713781Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloyYang Zhang0Yueming Fan1Kaili Feng2Chaoze Lu3Yihan Wang4Tianmin Shao5State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaState Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaState Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaState Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaState Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaCorresponding author.; State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing, 100084, ChinaHardness reflects the comprehensive mechanical properties of materials, and its evolution during a wide temperature range reflects high-temperature performance. This study investigates the evolution of the high-temperature hardness of a nickel-based superalloy Ni16Cr13Co4Mo. Various thermal cycles featuring distinct peak heating temperatures were utilized to examine the variation of Vickers hardness with temperature. The effect of precipitated phases (specifically the γ′ phase) in the superalloy on high-temperature hardness and the deformation mechanism of the alloy was analyzed. The results show that the high-temperature hardness of the nickel-based superalloy decreases as temperature increases. However, the hardness after thermal cycles demonstrates an increase which is determined by the peak heating temperature. The increased hardness following thermal cycles is attributed to the reduction in size and the increase in the volume fraction of secondary γ′. Detailed TEM observation revealed that as the peak temperature increases, the deformation mechanism transforms from dislocation pile-ups in the γ matrix, dislocation and stacking fault shearing, microtwining in γ and γ′ phases to stacking fault shearing and piled-up dislocations in γ phase. As the result, hardness decreases as temperature increases.http://www.sciencedirect.com/science/article/pii/S2238785424003867High temperatureVickers hardnessNickel-based superalloyThermal cyclingγ′ precipitates |
| spellingShingle | Yang Zhang Yueming Fan Kaili Feng Chaoze Lu Yihan Wang Tianmin Shao Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy Journal of Materials Research and Technology High temperature Vickers hardness Nickel-based superalloy Thermal cycling γ′ precipitates |
| title | Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy |
| title_full | Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy |
| title_fullStr | Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy |
| title_full_unstemmed | Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy |
| title_short | Evolution of high-temperature hardness of multimodal γ′ nickel-based superalloy |
| title_sort | evolution of high temperature hardness of multimodal γ nickel based superalloy |
| topic | High temperature Vickers hardness Nickel-based superalloy Thermal cycling γ′ precipitates |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424003867 |
| work_keys_str_mv | AT yangzhang evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy AT yuemingfan evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy AT kailifeng evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy AT chaozelu evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy AT yihanwang evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy AT tianminshao evolutionofhightemperaturehardnessofmultimodalgnickelbasedsuperalloy |