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- Publisher Website: 10.1016/j.scriptamat.2024.116030
- Scopus: eid_2-s2.0-85184808416
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Article: The unexpected low fracture toughness of dual-phase steels caused by ferrite/martensite interface decohesion
| Title | The unexpected low fracture toughness of dual-phase steels caused by ferrite/martensite interface decohesion |
|---|---|
| Authors | |
| Keywords | DP steel Ferrite/martensite interface decohesion Fracture toughness Ultra-high strength |
| Issue Date | 13-Feb-2024 |
| Publisher | Elsevier |
| Citation | Scripta Materialia, 2024, v. 244 How to Cite? |
| Abstract | Recently, new categories of dual-phase (DP) steels with ultimate tensile strength (UTS) up to 1400 MPa have been developed by increasing martensite fraction and refining microstructure. The present work demonstrates for the first time that the fracture toughness of DP steel can be less than half of that of the counterpart fully martensitic steel with the same chemical composition. The severe decohesion of the ferrite/martensite (F/M) interface under high stress-triaxiality conditions is responsible for the unexpected large loss of fracture toughness in ultra-high strength DP steels. Furthermore, the DP steel with a martensite fraction (Vm) of 75 % exhibits the lowest fracture toughness due to the continuity of F/M interfaces. |
| Persistent Identifier | http://hdl.handle.net/10722/348037 |
| ISSN | 2023 Impact Factor: 5.3 2023 SCImago Journal Rankings: 1.738 |
| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Liu, Lang | - |
| dc.contributor.author | Li, Liejun | - |
| dc.contributor.author | He, Jiazhen | - |
| dc.contributor.author | Liang, Zhiyuan | - |
| dc.contributor.author | Peng, Zhengwu | - |
| dc.contributor.author | Gao, Jixiang | - |
| dc.contributor.author | Luo, Zhichao | - |
| dc.contributor.author | Huang, Mingxin | - |
| dc.date.accessioned | 2024-10-04T00:31:04Z | - |
| dc.date.available | 2024-10-04T00:31:04Z | - |
| dc.date.issued | 2024-02-13 | - |
| dc.identifier.citation | Scripta Materialia, 2024, v. 244 | - |
| dc.identifier.issn | 1359-6462 | - |
| dc.identifier.uri | http://hdl.handle.net/10722/348037 | - |
| dc.description.abstract | Recently, new categories of dual-phase (DP) steels with ultimate tensile strength (UTS) up to 1400 MPa have been developed by increasing martensite fraction and refining microstructure. The present work demonstrates for the first time that the fracture toughness of DP steel can be less than half of that of the counterpart fully martensitic steel with the same chemical composition. The severe decohesion of the ferrite/martensite (F/M) interface under high stress-triaxiality conditions is responsible for the unexpected large loss of fracture toughness in ultra-high strength DP steels. Furthermore, the DP steel with a martensite fraction (Vm) of 75 % exhibits the lowest fracture toughness due to the continuity of F/M interfaces. | - |
| dc.language | eng | - |
| dc.publisher | Elsevier | - |
| dc.relation.ispartof | Scripta Materialia | - |
| dc.subject | DP steel | - |
| dc.subject | Ferrite/martensite interface decohesion | - |
| dc.subject | Fracture toughness | - |
| dc.subject | Ultra-high strength | - |
| dc.title | The unexpected low fracture toughness of dual-phase steels caused by ferrite/martensite interface decohesion | - |
| dc.type | Article | - |
| dc.identifier.doi | 10.1016/j.scriptamat.2024.116030 | - |
| dc.identifier.scopus | eid_2-s2.0-85184808416 | - |
| dc.identifier.volume | 244 | - |
| dc.identifier.issnl | 1359-6462 | - |