M. Masoumi , B. Fonseca , M. Béreš , M.J. Silva-Neto , H.F.G. Abreu
{"title":"马氏体时效钢的微观组织演变和分层协同作用：通过奥氏体还原剪裁强度和延展性","authors":"M. Masoumi , B. Fonseca , M. Béreš , M.J. Silva-Neto , H.F.G. Abreu","doi":"10.1016/j.matlet.2025.138494","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the microstructural evolution and phase transformations in advanced maraging steel, emphasizing the interplay between reverted austenite, martensite, and nanoprecipitates. X-ray diffraction confirmed 9.8 ± 0.3 vol% retained austenite, while nanoindentation revealed its stress-assisted transformation, enhancing ductility via the TRIP effect. Aging at 560 °C preserved the martensitic laths, promoting microchemical diffusion and austenite reversion. EBSD analysis highlighted Kurdjumov-Sachs orientation relationships and dislocation dynamics, linking lattice distortion to mechanical strength. This hierarchical nanostructural synergy enhances ductility and toughness with minimal reduction in strength by combining hard nanoprecipitates and soft reverted austenite within the martensitic structure.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"391 ","pages":"Article 138494"},"PeriodicalIF":2.7000,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microstructural evolution and hierarchical synergy in maraging steels: Tailoring strength and ductility through austenite reversion\",\"authors\":\"M. Masoumi , B. Fonseca , M. Béreš , M.J. Silva-Neto , H.F.G. Abreu\",\"doi\":\"10.1016/j.matlet.2025.138494\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the microstructural evolution and phase transformations in advanced maraging steel, emphasizing the interplay between reverted austenite, martensite, and nanoprecipitates. X-ray diffraction confirmed 9.8 ± 0.3 vol% retained austenite, while nanoindentation revealed its stress-assisted transformation, enhancing ductility via the TRIP effect. Aging at 560 °C preserved the martensitic laths, promoting microchemical diffusion and austenite reversion. EBSD analysis highlighted Kurdjumov-Sachs orientation relationships and dislocation dynamics, linking lattice distortion to mechanical strength. This hierarchical nanostructural synergy enhances ductility and toughness with minimal reduction in strength by combining hard nanoprecipitates and soft reverted austenite within the martensitic structure.</div></div>\",\"PeriodicalId\":384,\"journal\":{\"name\":\"Materials Letters\",\"volume\":\"391 \",\"pages\":\"Article 138494\"},\"PeriodicalIF\":2.7000,\"publicationDate\":\"2025-03-29\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Materials Letters\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167577X25005233\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25005233","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Microstructural evolution and hierarchical synergy in maraging steels: Tailoring strength and ductility through austenite reversion
This study investigates the microstructural evolution and phase transformations in advanced maraging steel, emphasizing the interplay between reverted austenite, martensite, and nanoprecipitates. X-ray diffraction confirmed 9.8 ± 0.3 vol% retained austenite, while nanoindentation revealed its stress-assisted transformation, enhancing ductility via the TRIP effect. Aging at 560 °C preserved the martensitic laths, promoting microchemical diffusion and austenite reversion. EBSD analysis highlighted Kurdjumov-Sachs orientation relationships and dislocation dynamics, linking lattice distortion to mechanical strength. This hierarchical nanostructural synergy enhances ductility and toughness with minimal reduction in strength by combining hard nanoprecipitates and soft reverted austenite within the martensitic structure.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
