Temperature Effect on Microstructure Evolution and Mechanical Properties of Fe-28Mn-8Al-1C Lightweight Steel via Supersonic Fine Particle Bombardment

被引：0
作者：
Xiong, Yi [1 ,2 ]
Lv, Wei [1 ]
Zha, Xiaoqin [3 ]
Li, Yong [4 ]
Du, Xiuju [5 ]
Yue, Yun [1 ]
Ren, Fengzhang [1 ,2 ]
Wang, Shubo [6 ]
机构：
[1] Henan Univ Sci & Technol, Sch Mat Sci & Engn, Luoyang 471023, Henan, Peoples R China
[2] Ctr Non Ferrous Met New Mat & Adv Proc Technol, Prov & Ministerial Coconstruct Collaborat lnnovat, Luoyang 471023, Henan, Peoples R China
[3] Luoyang Ship Mat Res Inst, Luoyang 471000, Henan, Peoples R China
[4] Cent Iron & Steel Res Inst, Beijing 100081, Peoples R China
[5] Hebei Normal Univ, Shijiazhuang 050024, Hebei, Peoples R China
[6] Univ Oulu, Nano & Mol Syst Res Unit, FIN-90014 Oulu, Finland
来源：
STEEL RESEARCH INTERNATIONAL | 2024年 / 95卷 / 09期
基金：
中国国家自然科学基金;
关键词：
CR-SFPB; Fe-28Mn-8Al-1C lightweight steel; mechanical properties; microstructure; RT-SFPB; surface integrity; STACKING-FAULT ENERGY; FATIGUE-CRACK GROWTH; PLASTIC-DEFORMATION; TENSILE PROPERTIES; SURFACE-ROUGHNESS; HIGH-STRENGTH; ALLOY; TITANIUM; BEHAVIOR; ROOM;
D O I：
10.1002/srin.202400264
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influence of room temperature (RT) and cryogenic temperature (CR) supersonic fine particle bombardment (SFPB) on the surface, microstructure, and mechanical properties of Fe-28Mn-8Al-1C lightweight steel is investigated in this work. The results indicate that both RT-SFPB and CR-SFPB successfully induce gradient nanostructures on the surface of steel, refining the grains to the nanoscale. Furthermore, CR-SFPB results in a finer grain size and higher dislocation density compared to RT-SFPB. Additionally, the dominant deformation mechanism shifts from dislocation slip for RT-SFPB to a combination of dislocation slip and twinning for CR-SFPB. CR-SFPB is seen to be superior to RT-SFPB in terms of surface integrity and strength due to low-temperature lubrication effect, suppression of dynamic recovery and reduced stacking fault energy of the material. Interestingly, while CR-SFPB enhances strength, elongation remains comparable to that of untreated material. However, excessive impact times during SFPB treatment promote microcrack formation on the surface, compromising plasticity. The effects of room temperature (RT) and cryogenic temperature (CR) supersonic fine particle bombardment (SFPB) on the surface integrity, microstructure, and mechanical properties of Fe-28Mn-8Al-1C lightweight steel are systematically investigated. CR-SFPB surpasses RT-SFPB in achieving the preferable balance between strength and ductility by means of the superior surface integrity, surface grain refinement, and presence of numerous deformation twins.image (c) 2024 WILEY-VCH GmbH
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页数：13
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