Acta Metallurgica Sinica-English Letters最新文献

{"title":"Corrosion Behavior of 304LN Stainless Steel in High-Temperature Supercritical Carbon Dioxide: Oxidation and Carburization","authors":"Nanfu Li,&nbsp;Bin Wu,&nbsp;Jiazhen Wang,&nbsp;Ming Shu,&nbsp;Yusheng Zhang,&nbsp;Yifeng Li,&nbsp;Jianqiu Wang,&nbsp;En-Hou Han,&nbsp;Hongliang Ming","doi":"10.1007/s40195-025-01889-z","DOIUrl":"10.1007/s40195-025-01889-z","url":null,"abstract":"<div><p>The corrosion behavior of 304LN austenitic stainless steel in supercritical CO₂ at 650 °C was investigated. The results show that 304LN follows Wagner’s law kinetics, forming a protective oxide film consisting of SiO₂, (Cr, Mn)₃O₄, and Cr₂O₃ from the inner to outer layers. A shallow carburization depth of approximately 130 nm indicates excellent resistance to carburization. The roles of key elements in 18/8 austenitic stainless steel represented by 304LN, such as Cr, Ni, and Si, were analyzed, highlighting their contributions to anti-carburization performance and corrosion resistance under harsh conditions.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 10","pages":"1809 - 1826"},"PeriodicalIF":3.9,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Nano-Structured Die Steel with High Strength and High Thermal Stability","authors":"Xinhao Li,&nbsp;Jieli Ma,&nbsp;Yiren Wang,&nbsp;Yong Jiang","doi":"10.1007/s40195-025-01881-7","DOIUrl":"10.1007/s40195-025-01881-7","url":null,"abstract":"<div><p>A novel oxide-dispersion-strengthened (ODS) die steel was fabricated by mechanical alloying and hot consolidation. Annealing and quench-tempering treatments both obtained an ultra-fine grain structure (mean size: 310–330 nm) with an ultra-high density of ultra-fine Y-Al-O nano-oxides (number density: ~ (1–1.5) × 10²³ m⁻³, mean size: 5.1–7.2 nm). Prolonged thermal exposure further induced the new, highly dense precipitation of ultra-fine Y-Zr-O nano-oxides. Both nano-oxides tended to be wrapped up with a B2-NiAl nano-shells. Although the quench-tempered sample showed much higher room-temperature strength (yield strength = 1393 ± 40 MPa and ultimate tensile strength = 1774 ± 11 MPa) and slightly lower elongation (elongation = 13.6% ± 0.6%) than the annealed sample (YS = 988 ± 7 MPa, UTS = 1490 ± 12 MPa, and EL = 15.2% ± 1.1%), both samples exhibited better strength-ductility synergy at room temperature and much higher thermal stabilities at high temperatures (600–700 °C) than all those conventional hot-work die steels, which makes the new ODS steel highly promising for advanced hot-work mold and die applications at high temperatures above 600 °C.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1591 - 1603"},"PeriodicalIF":3.9,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anisotropic Mechanical Behavior in an Extruded AZ31 Magnesium Alloy: Experimental and Crystal Plasticity Modeling","authors":"Shudong Yang,&nbsp;Xiaoqian Guo,&nbsp;Chao Ma,&nbsp;Lu Shen,&nbsp;Lingyu Zhao,&nbsp;Wei Zhu","doi":"10.1007/s40195-025-01882-6","DOIUrl":"10.1007/s40195-025-01882-6","url":null,"abstract":"<div><p>The mechanical anisotropy on extruded AZ31 magnesium alloy bar has been investigated by combining experimental measurement and crystal plasticity modeling. Monotonic tension and compression are conducted in four loading directions with the oblique angle <i>φ</i> of 0°, 30°, 60° and 90° from extrusion radial direction to extrusion direction, and are also simulated by visco-plastic self-consistent model with considering twinning and detwinning scheme at the first time. The simulation results are well in agreement with the corresponding experimental data. Combined with the Schmid factor (SF), the anisotropic mechanical behaviors including yield strength, ultimate strength and strain hardening rate are interpreted with the predicted relative activities of deformation modes, texture evolution and twin volume fraction. With the loading angle varying from 0° to 90°, it is found that prismatic slip becomes the primary deformation mode with the decreasing relative activities of basal slip and extension twinning in tension. While the deformation mechanism is more complex in compression: Extension twinning gets great activation at the beginning of the deformation, especially under compression along 90°; basal slip and pyramidal &lt; <i>c</i> + <i>a</i> &gt; slip dominate the late deformation of compression along 0° and 30°, while basal slip and prismatic slip are dominated modes in compression along 60° and 90°. Additionally, different <span>({{{10}stackrel{{-}}{1}{{2}}}})</span> twinning behaviors with two or three and one or two pairs of twin variants being activated in tension along 30° and compression along 90°, respectively, have a close correlation with the texture evolution to coordinate plastic deformation. The activation of <span>({{{10}stackrel{{-}}{1}{{2}}}})</span> twinning, which varies with the loading angle <i>φ</i>, results in the increased trend of strain hardening rate. Following the exhausting of twinning, non-basal slips with the highest SF become the primary deformation mode subsequently, contributing to the decreasing trend in hardening behavior and the anisotropy of ultimate strength.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1527 - 1544"},"PeriodicalIF":3.9,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909635","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cobalt–Nickel Cyano Coordination Polymer-Derived Square CoSe2@NiSe2 Nanosheets for Advanced Na+/K+ Batteries","authors":"Peng Yang,&nbsp;Jian Zhou,&nbsp;Yufei Zhang,&nbsp;Haosen Fan","doi":"10.1007/s40195-025-01870-w","DOIUrl":"10.1007/s40195-025-01870-w","url":null,"abstract":"<div><p>Sodium-ion batteries are receiving more and more attention due to their low cost and abundant sodium storage capacity, and are considered to be a promising alternative to lithium-ion batteries. A large number of studies have shown that constructing heterostructures are considered an effective strategy to solve the hysteresis problem of electronic and ion dynamics in sodium-ion battery anode materials. Herein, a nickel–cobalt bimetallic coordination polymer (NiCoCP) was synthesized using a coprecipitation method, and a CoSe₂@NiSe₂ cross-stacked structure was obtained through high-temperature carbonization and selenization processes. CoSe₂@NiSe₂ has a unique heterostructure and carbon film, which synergistically increases a large number of adsorption sites and alleviates the diffusion energy barrier, thereby improving the rapid diffusion kinetics of Na⁺ ions. It has superior rate performance and long-lasting cycle life. For sodium-ion batteries (SIBs), the specific capacity of CoSe₂@NiSe₂ is around 460 mA h g⁻¹ after 400 cycles at 1.0 A g⁻¹. For potassium-ion batteries (PIBs), CoSe₂@NiSe₂ also exhibits excellent cycling stability, maintaining a specific capacity of 160 mA h g⁻¹ after 700 cycles at 1.0 A g⁻¹. This study provides a new way to prepare metal selenide heterostructure as the promising anode material for SIBs.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 8","pages":"1340 - 1350"},"PeriodicalIF":3.9,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modelling Microsegregation of Binary Alloy During Solidification","authors":"Tongzhao Gong,&nbsp;Shuting Cao,&nbsp;Weiye Hao,&nbsp;Weiqi Fan,&nbsp;Yun Chen,&nbsp;Xing-Qiu Chen,&nbsp;Dianzhong Li","doi":"10.1007/s40195-025-01884-4","DOIUrl":"10.1007/s40195-025-01884-4","url":null,"abstract":"<div><p>This work studies the impact of the carbon diffusion on the growth kinetics of austenite and the solute segregation, by utilizing the phase-field (PF) method to simulate the solidification of a Fe–C binary alloy. It is revealed that increasing the ratio of the carbon diffusion coefficient in solid to that in liquid is advantageous in reducing the solute segregation, and a novel microsegregation model is developed based on the quantitative analysis of the results from PF simulations. The simplified one-dimensional diffusion simulation is employed to analyse the quantitative relationship between the parameters of the proposed microsegregation model and the properties of materials. The universality and reliability of the new microsegregation model are then validated by comparing with the experimental data of various alloy systems. These findings contribute to our comprehension of the fundamental theory of solidification and also provide a potential and promising approach to controlling the solidification microstructure.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1628 - 1636"},"PeriodicalIF":3.9,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Ductility of a 3Mn Medium-Mn Steel by Manipulating the Austenite Reversion Path","authors":"Qinyuan Zheng,&nbsp;Yi Lu,&nbsp;Chengwu Zheng,&nbsp;Peng Liu,&nbsp;Tian Liang,&nbsp;Yikun Luan,&nbsp;Dianzhong Li","doi":"10.1007/s40195-025-01886-2","DOIUrl":"10.1007/s40195-025-01886-2","url":null,"abstract":"<div><p>In the present study, a simple but effective two-step annealing processing strategy via manipulating the austenite reversion path is proposed to obtain a large fraction of retained austenite in low-Mn medium-Mn steels. Initially, the Fe–3Mn–0.2C–1.5Si (wt%) steel is intercritically annealed to form Mn-enriched lamellar martensite precursors. Subsequently, the austenite reversion transformation is manipulated to occur within the martensite lamellae during the second annealing process, resulting in an ultra-fine duplex microstructure of laminated austenite and ferrite. This process can not only allow a large fraction of austenite to be retained in low-Mn medium-Mn steels, but also increase the elongation by up to 41% without sacrificing the strength level compared to the conventional annealing.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1583 - 1590"},"PeriodicalIF":3.9,"publicationDate":"2025-06-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909688","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Breaking Strength-Ductility Trade-off Relation in Ti-38644 Alloy with Heterogeneous Bi-Grain Bi-Lamella Structure","authors":"Zihao Qiu,&nbsp;Chenwei Shao,&nbsp;Shuaijie Han,&nbsp;Yang Lu,&nbsp;Zhiqin Wang,&nbsp;Hanzhong Liu,&nbsp;Zhenjun Zhang,&nbsp;Zhefeng Zhang","doi":"10.1007/s40195-025-01874-6","DOIUrl":"10.1007/s40195-025-01874-6","url":null,"abstract":"<div><p>Metastable <i>β</i> titanium alloy is an ideal material for lightweight and high strength due to its excellent comprehensive mechanical properties. However, overcoming the trade-off relation between strength and ductility remains a significant challenge. In this study, the mechanical properties of Ti-38644 alloy were optimized by introducing a heterogeneous bi-grain bi-lamella (BG-BL) structure through a well-designed combination of rolling, drawing and heat treatment. The results demonstrate that the present BG-BL Ti-38644 alloy shows a tensile strength of ~ 1500 MPa and a total elongation of 18%. In particular, the high strength-elongation combination of the BG-BL Ti-38644 alloy breakthroughs the trade-off relation in all the titanium alloys available. The recrystallized grains with low dislocation enhance the ductility of the Ti-38644 alloy, while the highly distorted elongated grains mainly contribute to the high strength. The present study provides a new principle for designing Ti alloys with superior strength and ductility.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 8","pages":"1312 - 1316"},"PeriodicalIF":3.9,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s40195-025-01874-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermal Stability and Mechanical Properties of Nanotwinned Ni–W Alloyed Films","authors":"Shuyi Ren,&nbsp;Jiao Li,&nbsp;Kai Wu,&nbsp;Xiaoge Li,&nbsp;Yaqiang Wang,&nbsp;Jinyu Zhang,&nbsp;Gang Liu,&nbsp;Jun Sun","doi":"10.1007/s40195-025-01880-8","DOIUrl":"10.1007/s40195-025-01880-8","url":null,"abstract":"<div><p>Nanocrystalline alloys often exhibit unusual thermal stability as a consequence of kinetic and thermodynamic barriers to grain growth. However, the physical mechanisms governing alloy stability need to be identified. In this work, we found that grain boundary (GB) relaxation renders Ni–W alloyed films relatively stable at low annealing temperature, while twinning-mediated grain growth occurs via dislocation-GB/twin boundary (TB) interactions as the annealing temperature increases. At a relatively low temperature, TB strengthening plays a dominant role in plastic deformation, whereas precipitation strengthening gradually controls the deformation mechanism with the increase of annealing temperature. Our findings provide evidence for improving mechanical property through alloying and microstructure design, and have a crucial guiding significance in material selection and miniaturized applications such as Micro Electro Mechanical Systems.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1570 - 1582"},"PeriodicalIF":3.9,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Machine-Learning-Assisted Phase Prediction in High-Entropy Alloys Using Two-Step Feature Selection Strategy","authors":"Jiayu Wang,&nbsp;Ke Liu,&nbsp;Zhao Lei,&nbsp;Xing Li,&nbsp;Li Liu,&nbsp;Sujun Wu","doi":"10.1007/s40195-025-01876-4","DOIUrl":"10.1007/s40195-025-01876-4","url":null,"abstract":"<div><p>The complex compositions of high-entropy alloys (HEAs) enable a variety of phase structures like FCC single phase, BCC single phase, or duplex FCC + BCC phase. Accurate and efficient prediction of phase structure is crucial for accelerating the discovery of new components and designing HEAs with desired phase structure. In this work, five machine learning strategies were utilized to predict the phase structures of HEAs with a dataset of 296. Specifically, a two-step feature selection strategy was proposed, enabling pronounced improvement in the computational efficiency from 2047 to 12 iterations for each model while ensuring fewer input features and higher prediction accuracy. Compared with traditional valence electron concentration criterion, the prediction accuracy of collected dataset was highly improved from 0.79 to 0.98 for random forest. Furthermore, HEAs with compositions of Al_<i>x</i>CoCu₆Ni₆Fe₆ (<i>x</i> = 1, 3, 6) were developed to validate the prediction results of machine learning models, and the mechanical properties as well as corrosion resistance were investigated. It is found that the higher Al content enhances the yield strength but deteriorates corrosion resistance. The present two-step feature selection strategy provides an alternative method that is feasible for predicting the phase structure of HEAs with high efficiency and accuracy.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 8","pages":"1261 - 1274"},"PeriodicalIF":3.9,"publicationDate":"2025-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168758","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Ti2AlC Addition on the Microstructure and Mechanical Property of Additive Manufactured Inconel 718 Alloys via Laser Powder Bed Fusion","authors":"Huihui Wang,&nbsp;Qianying Guo,&nbsp;Chong Li,&nbsp;Lei Cui,&nbsp;Yiming Huang,&nbsp;Yongchang Liu","doi":"10.1007/s40195-025-01877-3","DOIUrl":"10.1007/s40195-025-01877-3","url":null,"abstract":"<div><p>Improving the high-temperature performance of Inconel 718 (IN718) alloys manufactured via laser powder bed fusion (LPBF) has been the most concerned issue in the industry. In this study, the effects of Ti₂AlC inoculants on microstructures and high-temperature mechanical properties of the as-built IN718 composites were investigated. According to statistical results of relative density and unmelted particle area in as-built alloys, the optimal energy of 112 J/mm³ was determined. It was observed that the precipitation of the <i>M</i>C carbide was significantly enhanced with the addition of Ti₂AlC, restricting the precipitation of the Laves phase. The <i>M</i>C particles were uniformly distributed along the subgrain boundaries, which contributed to the dispersion strengthening. Meanwhile, the <i>M</i>C particles served as nucleation sites for heterogeneous nucleation during the solidification process, facilitating the refinement of columnar and cellular grains. The simulated Scheil–Gulliver curves showed that the precipitation sequence of phases did not change with Ti₂AlC inoculants. The as-built 1%Ti₂AlC/IN718 sample demonstrated an ultimate tensile strength of 998.78 MPa and an elongation of 18.04% at 650 °C, revealing a markedly improved mechanical performance compared with the LPBF-manufactured IN718 alloys. The high-temperature tensile strength of 1%Ti₂AlC/IN718 sample increased to 1197.99 MPa by heat treatment. It was suggested that dislocation strengthening and ordered strengthening were two most important reinforcement mechanisms.</p></div>","PeriodicalId":457,"journal":{"name":"Acta Metallurgica Sinica-English Letters","volume":"38 9","pages":"1481 - 1498"},"PeriodicalIF":3.9,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144909646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}