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Sequential γ-ε-α′ transformation preserves high elongation in an ultrafine-grained high Mn steel 超细晶粒高锰钢中的γ-ε-α′顺序转化可保持高伸长率
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-24 DOI: 10.1016/j.scriptamat.2024.116475
Guangqi Dong , Lingyu Wang , Jinliang Wang , Jiahua Yuan , Minghao Huang , Chenchong Wang , Yizhuang Li , Wei Xu
{"title":"Sequential γ-ε-α′ transformation preserves high elongation in an ultrafine-grained high Mn steel","authors":"Guangqi Dong ,&nbsp;Lingyu Wang ,&nbsp;Jinliang Wang ,&nbsp;Jiahua Yuan ,&nbsp;Minghao Huang ,&nbsp;Chenchong Wang ,&nbsp;Yizhuang Li ,&nbsp;Wei Xu","doi":"10.1016/j.scriptamat.2024.116475","DOIUrl":"10.1016/j.scriptamat.2024.116475","url":null,"abstract":"<div><div>While grain refinement is a prominent way to improve the yield strength of metastable austenitic steels, it usually leads to a reduction in the uniform elongation as γ-α′ transformation tends to be suppressed. In the current study, it is found that the sequential γ-ε-α′ transformation helps an ultrafine-grained high Mn austenitic steel maintain high uniform elongation while having more than doubled yield strength compared to the coarse-grained counterpart. Although the grain refinement is unfavorable for the γ-ε transformation due to ε variant selection within the refined γ grains, the ε-α′ transformation is not affected as multiple α′ variants can form within one ε grain. The combination of a higher α′ transformation rate and delayed transformation kinetics enables continued strain hardening, leading to high uniform elongation.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116475"},"PeriodicalIF":5.3,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706378","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}
引用次数: 0
Damping of vibrations of a rod by dissipation due to diffusion 通过扩散耗散阻尼杆的振动
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-23 DOI: 10.1016/j.scriptamat.2024.116461
J. Svoboda , K. Hackl , F.D. Fischer
{"title":"Damping of vibrations of a rod by dissipation due to diffusion","authors":"J. Svoboda ,&nbsp;K. Hackl ,&nbsp;F.D. Fischer","doi":"10.1016/j.scriptamat.2024.116461","DOIUrl":"10.1016/j.scriptamat.2024.116461","url":null,"abstract":"<div><div>Understanding the interaction of vibrations with diffusion, e.g. of carbon in fcc lattice, is still of practical relevance. An analytical framework is offered based on the mechanics and thermodynamics, where the evaluated total dissipation by diffusion allows calculation of damping of a vibrating rod from the Gibbs energy balance. Finally, a simple relation is found relating the diffusion coefficient, geometry and elastic properties of the rod with its damping coefficient. This method could be utilized for measurement of the diffusion coefficient.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116461"},"PeriodicalIF":5.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706376","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}
引用次数: 0
The microstructure and properties of Cu-Ta alloys prepared by laser directed energy deposition 激光定向能沉积制备的铜-钽合金的微观结构和性能
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-23 DOI: 10.1016/j.scriptamat.2024.116466
Congwen Tang , Dengzhi Wang , Pengfei Sun , Tao Lai , Heng Zhang , Ming Chen , Haohua Zhou
{"title":"The microstructure and properties of Cu-Ta alloys prepared by laser directed energy deposition","authors":"Congwen Tang ,&nbsp;Dengzhi Wang ,&nbsp;Pengfei Sun ,&nbsp;Tao Lai ,&nbsp;Heng Zhang ,&nbsp;Ming Chen ,&nbsp;Haohua Zhou","doi":"10.1016/j.scriptamat.2024.116466","DOIUrl":"10.1016/j.scriptamat.2024.116466","url":null,"abstract":"<div><div>The Cu-Ta and Cu-Ta-Ti deposited alloys were successfully prepared by laser directed energy deposition. The occurrence of monotectic reaction in Cu-Ta alloy was evidenced under the condition of oxygen impurities and high cooling rate. The incorporation of Ti in Cu-Ta-Ti alloy promotes the transition from incoherent Cu/Ta interface to semi-coherent Cu/β-Cu<sub>3</sub>Ti/Ta interface, facilitating the dislocations transmit across the interface. Additionally, the solid solution strengthening and the precipitation strengthening provide the Cu-Ta-Ti deposited alloy with a balance of excellent strength and ductility, where the Cu-Ta-Ti deposited alloy has an ultimate tensile strength of 744 ± 8 MPa, a yield strength of 577 ± 12 MPa, and a total elongation of 9.9 ± 0.3 %.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116466"},"PeriodicalIF":5.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706377","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}
引用次数: 0
Enhancement of magnetostriction in laser powder bed fusion Fe-Ga alloy by texture formation 通过纹理形成增强激光粉末床熔融铁-镓合金的磁致伸缩性
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-23 DOI: 10.1016/j.scriptamat.2024.116471
Renkang Huo, Victor Cruz De Faria, Erin Brodie, Julie Karel, Kiyonori Suzuki
{"title":"Enhancement of magnetostriction in laser powder bed fusion Fe-Ga alloy by texture formation","authors":"Renkang Huo,&nbsp;Victor Cruz De Faria,&nbsp;Erin Brodie,&nbsp;Julie Karel,&nbsp;Kiyonori Suzuki","doi":"10.1016/j.scriptamat.2024.116471","DOIUrl":"10.1016/j.scriptamat.2024.116471","url":null,"abstract":"<div><div>Magnetostrictive Fe–Ga alloys have received much attention in sensing and harvesting applications owing to their outstanding mechanical and magnetostrictive properties. The largest magnetostriction in Fe–Ga is found along the &lt;100&gt; direction. Utilising additive manufacturing (AM) for preparation of Fe–Ga will expand the potential to manufacture complex shapes and geometries, if the strong &lt;100&gt; texture is formed. This study investigated the saturation magnetostriction of a polycrystalline Fe–Ga alloy prepared by laser powder bed fusion (L-PBF) under controlled processing parameters. The results revealed that the combination of a narrow hatch space and laser remelting treatment significantly enhances the apparent magnetostriction of the L-PBF Fe–Ga alloy. Notably, at a hatch space of 40 μm, the highest saturation magnetostriction is around 70 ppm. This value is almost three times higher than that of a polycrystalline Fe–Ga alloy with the same chemical composition where grains are randomly oriented.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116471"},"PeriodicalIF":5.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706375","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}
引用次数: 0
3D mosaicity of a single-crystal nickel-based superalloy by lab-based diffraction contrast tomography 通过实验室衍射对比断层扫描分析单晶镍基超级合金的三维镶嵌性
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-22 DOI: 10.1016/j.scriptamat.2024.116463
Alexiane Arnaud , Jun Sun , Florian Bachmann , Vladimir Esin , Henry Proudhon
{"title":"3D mosaicity of a single-crystal nickel-based superalloy by lab-based diffraction contrast tomography","authors":"Alexiane Arnaud ,&nbsp;Jun Sun ,&nbsp;Florian Bachmann ,&nbsp;Vladimir Esin ,&nbsp;Henry Proudhon","doi":"10.1016/j.scriptamat.2024.116463","DOIUrl":"10.1016/j.scriptamat.2024.116463","url":null,"abstract":"<div><div>The 3D microstructure of a second-generation single-crystal nickel-based superalloy, René N5, has been analyzed using laboratory-based X-ray diffraction contrast tomography (lab-based DCT). This experiment has demonstrated the precise capabilities of lab-based DCT in resolving subgrain boundaries with a misorientation angle of less than 1°, achieving an angular accuracy as fine as 0.1°. The performance of the lab-based DCT has been compared with standard and widely used electron backscatter diffraction (EBSD) analysis. Obtaining the 3D microstructure non-destructively enabled the segmentation of the network of nickel-based single-crystal dendrites, opening up new opportunities for studying crystal mosaicity.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116463"},"PeriodicalIF":5.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706373","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}
引用次数: 0
Developing a novel phase balance of duplex stainless steel for exceptional mechanical properties and corrosion resistance 开发新型相平衡双相不锈钢，实现优异的机械性能和耐腐蚀性能
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-22 DOI: 10.1016/j.scriptamat.2024.116467
Guoyun Luo, Zisong Zhao, Jing Peng, Xionghao Deng, Yuchao Li, Xuan Liu, Manping Cheng, Simeng Li, Lijun Song
{"title":"Developing a novel phase balance of duplex stainless steel for exceptional mechanical properties and corrosion resistance","authors":"Guoyun Luo,&nbsp;Zisong Zhao,&nbsp;Jing Peng,&nbsp;Xionghao Deng,&nbsp;Yuchao Li,&nbsp;Xuan Liu,&nbsp;Manping Cheng,&nbsp;Simeng Li,&nbsp;Lijun Song","doi":"10.1016/j.scriptamat.2024.116467","DOIUrl":"10.1016/j.scriptamat.2024.116467","url":null,"abstract":"<div><div>The classical ferrite-austenite balance of duplex stainless steel is still challenged by fulfilling an ultimate balance between mechanical property and corrosion resistance. In this work, a novel phase-balanced metastable structure is in-situ developed using additive manufacturing via para-equilibrium transformation controlled by interstitial nitrogen diffusion. The novel phase-balanced structure comprises a primary fine equiaxed intragranular austenite, an incomplete partitioning of alloying elements, a predominate Kurdjumov-Sachs orientation relationship of ferrite/austenite interface and a high-density dislocation. Synergistic breakthrough of both mechanical property and corrosion resistance is endowed, where excellent yield strength is attributed to the high-density dislocation and the fine austenite, high ductility is facilitated by triggering stacking fault and kinking deformation from the dramatic increase of stacking fault energy, and extraordinary corrosion resistance is credit to the incomplete partitioning of alloying elements. This work expands the microstructure design framework for high performance materials.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116467"},"PeriodicalIF":5.3,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706374","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}
引用次数: 0
Complex irregular stacking faults within Zr3Ge secondary phase nanoparticle stimulated by face-centered cubic zirconium phase growth 面心立方锆相生长激发 Zr3Ge 次生纳米粒子内的复杂不规则堆积断层
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-21 DOI: 10.1016/j.scriptamat.2024.116460
Fuzhou Han , Wenbin Guo , Jie Ren , Qichen Wang , Jianan Hu , Muhammad Ali , Fusen Yuan , Yingdong Zhang , Chengze Liu , Hengfei Gu , Geping Li
{"title":"Complex irregular stacking faults within Zr3Ge secondary phase nanoparticle stimulated by face-centered cubic zirconium phase growth","authors":"Fuzhou Han ,&nbsp;Wenbin Guo ,&nbsp;Jie Ren ,&nbsp;Qichen Wang ,&nbsp;Jianan Hu ,&nbsp;Muhammad Ali ,&nbsp;Fusen Yuan ,&nbsp;Yingdong Zhang ,&nbsp;Chengze Liu ,&nbsp;Hengfei Gu ,&nbsp;Geping Li","doi":"10.1016/j.scriptamat.2024.116460","DOIUrl":"10.1016/j.scriptamat.2024.116460","url":null,"abstract":"<div><div>Here we report, for the first time, complex irregular stacking faults were generated within tetragonal Zr<sub>3</sub>Ge secondary phase particles (SPPs) in the Ge-modified Zircaloy-4 (Zr-4) alloy when subjected to high-temperature compression at 600°C. Atomic-scale observations indicated that the complex irregular stacking faults (CISFs) exhibit a non-coplanar deformation configuration characteristic. When viewed along the [001]<sub>Zr3Ge</sub> direction, atomic shifts were observed on three different crystallographic planes: (100), (010) and (110) planes, in other words, this defect was developed by the repetition and connection of superlattice intrinsic stacking faults on three different planes of the Zr<sub>3</sub>Ge SPP. Based on the crystallographic orientations relationships among the Zr<sub>3</sub>Ge and its surrounding precipitates, a mechanical model was proposed to uncover the nature of such CISFs structure. It confirmed that the CISFs can be attributed to the combined effects of the relatively low stacking fault energy and the growth of two nearby FCC-Zr phases.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116460"},"PeriodicalIF":5.3,"publicationDate":"2024-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706372","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}
引用次数: 0
Improving parent-austenite twinned grain reconstruction using electron backscatter diffraction in low carbon austenite 利用电子反向散射衍射改进低碳奥氏体中母体-奥氏体孪晶的重构
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-19 DOI: 10.1016/j.scriptamat.2024.116459
Ruth M. Birch, T. Ben Britton, Warren J. Poole
{"title":"Improving parent-austenite twinned grain reconstruction using electron backscatter diffraction in low carbon austenite","authors":"Ruth M. Birch,&nbsp;T. Ben Britton,&nbsp;Warren J. Poole","doi":"10.1016/j.scriptamat.2024.116459","DOIUrl":"10.1016/j.scriptamat.2024.116459","url":null,"abstract":"<div><div>Thermomechanical controlled processing (TMCP) is widely used to optimize the final properties of high strength low alloy (HSLA) steels, via microstructure engineering. The room temperature microstructures are influenced by the high temperature austenite phase, and the austenite microstructure can be accessed by reconstruction using electron backscatter diffraction (EBSD) data of the final microstructure. A challenge for reconstruction of the parent austenite grain (PAG) microstructure and subsequent austenite grain size measurement is the presence of austenite-phase annealing twins, and we address this challenge with a new ‘re-sort’ algorithm. Our algorithm has been validated using the retained austenite regions (which were recovered via advanced pattern matching of EBSD patterns). We demonstrate that the re-sort algorithm improves the PAG reconstruction significantly, especially for the grain boundary network and correlation with other methods of grain size assessment and development of TMCP steels.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116459"},"PeriodicalIF":5.3,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706371","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}
引用次数: 0
Alloying element Ag modifies the behavior of H and defects in Pd alloys 合金元素银改变钯合金中 H 和缺陷的行为
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-18 DOI: 10.1016/j.scriptamat.2024.116465
Yipeng Li , Jiacheng Ren , Dewang Cui , Zhong-Qun Tian , Jiangfeng Song , Guang Ran
{"title":"Alloying element Ag modifies the behavior of H and defects in Pd alloys","authors":"Yipeng Li ,&nbsp;Jiacheng Ren ,&nbsp;Dewang Cui ,&nbsp;Zhong-Qun Tian ,&nbsp;Jiangfeng Song ,&nbsp;Guang Ran","doi":"10.1016/j.scriptamat.2024.116465","DOIUrl":"10.1016/j.scriptamat.2024.116465","url":null,"abstract":"<div><div>Although alloying can significantly increase the hydrogen permeability of palladium (Pd) and solve the problem of hydrogen embrittlement in service, the intrinsic mechanism has not been revealed. Here, we report intuitive differences in the nucleation, growth and distribution of dislocation loops in Pd and PdAg alloys by in-situ hydrogen irradiation in TEM. The results reveal that alloying element Ag not only modifies the behavior of H, but also induces defects to change from the original long-range one-dimensional (1D) diffusion to short-range three-dimensional (3D) diffusion, which significantly delays the aggregation and growth of dislocation loops and reduces the total irradiation damage and H retention. A new strategy to improve hydrogen embrittlement resistance is proposed, i.e., constructing dense dislocation loop bands (or other sinks that can efficiently trap H) in front of grain boundaries to prevent H from diffusing into the grain boundaries.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116465"},"PeriodicalIF":5.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706409","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}
引用次数: 0
Development of ultra-high-strength Al-Mg-Si conductor alloys with copper addition via scalable thermomechanical processes 通过可扩展的热机械工艺开发添加铜的超高强度铝镁硅导体合金
IF 5.3 2区 材料科学
Scripta Materialia Pub Date : 2024-11-18 DOI: 10.1016/j.scriptamat.2024.116462
E.M. Elgallad , S.N. Khangholi , M. Javidani , A. Maltais , X.-G. Chen
{"title":"Development of ultra-high-strength Al-Mg-Si conductor alloys with copper addition via scalable thermomechanical processes","authors":"E.M. Elgallad ,&nbsp;S.N. Khangholi ,&nbsp;M. Javidani ,&nbsp;A. Maltais ,&nbsp;X.-G. Chen","doi":"10.1016/j.scriptamat.2024.116462","DOIUrl":"10.1016/j.scriptamat.2024.116462","url":null,"abstract":"<div><div>An ultra-high strength Al-Mg-Si conductor alloy was developed using the addition of 0.4 wt.% Cu. Using scalable thermomechanical processes, the Cu addition resulted in a substantial 37% increase in the ultimate tensile strength (UTS) with a slight 4.5% decrease in the electrical conductivity (EC), achieving 500 MPa UTS and 49% IACS EC. This breakthrough achievement holds promise for replacing the steel core traditionally used in aluminum conductor steel reinforced (ACSR) cables with high-performance Al alloys. The significant increase in the strength of the developed alloy was attributed to the formation of coherent Cu-containing β\" precursors during preaging, which exhibited higher dissolution resistance during wire drawing, thereby remaining highly dispersed in the matrix after 92% area reduction.</div></div>","PeriodicalId":423,"journal":{"name":"Scripta Materialia","volume":"257 ","pages":"Article 116462"},"PeriodicalIF":5.3,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706369","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}
引用次数: 0
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