Kaixuan Zhou, Yonghao Zhao, Qingzhong Mao, Shunqiang Li, Jizi Liu
{"title":"Enhanced mechanical and electrical properties of Cu-Ni-Be alloys through rotary swaging and aging treatment","authors":"Kaixuan Zhou, Yonghao Zhao, Qingzhong Mao, Shunqiang Li, Jizi Liu","doi":"10.1016/j.jmst.2025.01.073","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.073","url":null,"abstract":"High-performance copper alloys with enhanced strength, conductivity, and toughness are critical in industrial applications, yet achieving this combination of properties in a bulk form remains challenging, as many strength-enhancing grain refinement methods are limited to small-scale production. This study investigates the development of Cu-Ni-Be alloys with high strength, high conductivity, and excellent ductility using rotary swaging (RS) as the primary processing method, followed by aging treatments. The RS process, known for its advantages in industrial-scale applications, enables the formation of fibrous, elongated grains with strong axial alignment, resulting in improved conductivity along the wire direction. Additionally, the triaxial compressive stresses inherent in RS promote effective dislocation accumulation, producing an alloy with a strength of 706 MPa, uniform elongation of 1.4%, and conductivity of 35% international annealed copper standard (IACS) in the as-swaged state. Optimized aging treatments further improve the comprehensive performance of the alloy, increasing its strength to 1064 MPa, uniform elongation to 10.4%, and conductivity to 46% IACS through the formation of dispersed nanoscale precipitates. These findings demonstrate that the Cu-Ni-Be alloy processed by RS and aging achieves a unique balance of tensile strength, ductility, and conductivity, making it highly suitable for industrial applications. This establishes RS as a viable approach for producing advanced Cu-Ni-Be alloys with tailored properties for the electrical and structural industries.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"20 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Simultaneously achieving exceptional and heat treatment insensitive strength-ductility synergy in an α+β titanium alloy via tailoring silicide and heterogeneous α precipitates","authors":"Jinhua Dai, Bin Tang, Chuanyun Wang, Yurong Fan, Beibei Wei, Jiaqi Wu, Yilei Wang, Xiaofei Chen, Xiang Zhang, Yiheng Han, Wentao Chen, Jinshan Li, Pingxiang Zhang","doi":"10.1016/j.jmst.2025.01.072","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.072","url":null,"abstract":"The development of cost-effective titanium alloys with outstanding mechanical properties has always been a primary concern of the modern aerospace industry. However, the intrinsic sensitivity of their <em>α</em> precipitates to heat treatments proliferates the manufacturing costs to achieve desirable strength and ductility, especially in engineering occasions. In current work, a silicide-containing <em>α</em>+<em>β</em> Ti-5Al-7.5V-0.5Mo-0.5Zr-0.5Si (TC5751S) alloy has been evidenced to exhibit advanced mechanical properties with reduced sensitivity to heat treatments. It is noted that more nano-scale secondary <em>α</em> (<em>α</em><sub>s</sub>) precipitate with a simultaneous dissolution in micron-scale primary <em>α</em> (<em>α</em><sub>p</sub>) and (Ti, Zr)<sub>5</sub>Si<sub>3</sub> silicides in the current alloy as the solution temperature increases. However, this alloy shows excellent and stabilized strength-ductility synergy in all cases (ultimate tensile strength: 1335±30 MPa, yield strength: 1245±30 MPa, fracture strain: 9.6%±0.5%) irrespective of the aforementioned variations in the microstructure. This stabilized strength and ductility of TC5751S are rationalized based on the compensation mechanisms between the contributions from silicide and heterogeneous <em>α</em> precipitates. The quantitative analysis unveils that the increased <em>α</em><sub>s</sub>/<em>β</em> phase boundary strengthening (<span><span style=\"\"><math><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\">σ</mi><mtext is=\"true\">PB</mtext></msub><mrow is=\"true\"><mo is=\"true\">)</mo></mrow></mrow></math></span><span style=\"font-size: 90%; display: inline-block;\" tabindex=\"0\"></span><script type=\"math/mml\"><math><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\">σ</mi><mtext is=\"true\">PB</mtext></msub><mrow is=\"true\"><mo is=\"true\">)</mo></mrow></mrow></math></script></span> is approximately offset by the decrease in silicide strengthening (<span><span style=\"\"><math><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\">σ</mi><mtext is=\"true\">silicide</mtext></msub><mrow is=\"true\"><mo is=\"true\">)</mo></mrow></mrow></math></span><span style=\"font-size: 90%; display: inline-block;\" tabindex=\"0\"></span><script type=\"math/mml\"><math><mrow is=\"true\"><msub is=\"true\"><mi is=\"true\">σ</mi><mtext is=\"true\">silicide</mtext></msub><mrow is=\"true\"><mo is=\"true\">)</mo></mrow></mrow></math></script></span> due to silicide dissolution with increasing solution temperatures, leading to the strength of TC5751S in a dynamic equilibrium state. Simultaneously, the dissolution of silicides reduces the cracking tendency and complements the ductility loss due to <em>α</em><sub>p</sub> reduction and <em>α</em><sub>s</sub> precipitation, leading to the ductility insensitive to heat treatments. Therefore, the compensating role of silicides to the effects of heterogeneous <em>α</em> precipitates on both the strength and ductility of titanium alloys has been well-verified in our work, providing a novel pathway to the dev","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"33 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dan Li, Bangfu Xi, Yong Xiao, Lizhi Song, Jian Zhang, Dan Luo, Russell Goodall
{"title":"Low-temperature active soldering of 5A06-Al alloy and Ti-Cu-Ni alloy mesh-reinforced SAC305 composite solder: Interfacial bonding behavior and joint properties","authors":"Dan Li, Bangfu Xi, Yong Xiao, Lizhi Song, Jian Zhang, Dan Luo, Russell Goodall","doi":"10.1016/j.jmst.2025.01.070","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.070","url":null,"abstract":"Achieving reliable bonding is critical to low-temperature active soldering in Al alloys. In this study, a novel Ti-Cu-Ni alloy mesh-reinforced SAC305 composite solder was developed for active soldering of 5A06-Al alloy at 350°C. Effects of soldering time on the microstructure and mechanical properties of joints were investigated, and the interfacial bonding mechanism of joints was analyzed. Results showed that the (Cu, Ni)<sub>6</sub>Sn<sub>5</sub> phase was formed between alloy mesh and SAC305 solder in the active composite solder, while Ti atoms were uniformly released from the alloy mesh. Metallurgical products within joints mainly comprised (Cu, Ni)<sub>6</sub>Sn<sub>5</sub> and Al<sub>3</sub>(Ni, Cu)<sub>2</sub> phases, which developed with increasing soldering time. An amorphous Al<sub>2</sub>O<sub>3</sub> layer and a Mg-containing layer were formed at the Al substrate/SAC305 solder interface. Mg atoms could enhance the charge transfer between Ti atoms and oxide film, attracting the diffusion of Ti atoms to oxide film. The oxide film removal processes relied on the synergistic impacts of Ti and Mg elements. The highest shear strength of joints reached 53.21 ± 0.91 MPa, exceeding previously reported properties for low-temperature active soldering by over 100%. This exploration may provide insights into developing low-temperature active soldering technologies for Al alloys.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"62 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ultra-light gradient Cf/(CrZrHfNbTa)C-SiC composite all-in-one strategy enables efficient thermal insulation, EMI shielding and ablation resistance","authors":"Yang Hu, Dewei Ni, Bowen Chen, Feiyan Cai, Yusheng Ding, Shaoming Dong","doi":"10.1016/j.jmst.2024.12.105","DOIUrl":"https://doi.org/10.1016/j.jmst.2024.12.105","url":null,"abstract":"The ultra-lightweight and multifunction integrated thermal protection materials are critical for the development of hypersonic vehicles. Although various materials have been developed as potential thermal protection materials, most of them generally present a singular function. It is still challenging to meet the multifunctional requirements of ultra-lightweight, thermal insulation, electromagnetic interference (EMI) shielding, and high-temperature ablation resistance. Herein, a gradient C<sub>f</sub>/(CrZrHfNbTa)C-SiC composite is designed and fabricated based on the bionic strategy of capillary adsorption and transport. The developed gradient C<sub>f</sub>/(CrZrHfNbTa)C-SiC composite is as light as 0.74 g/cm<sup>3</sup>, which shows excellent ablation resistance (−3.88 μm/s at 2000°C). It also presents competitive thermal insulation performance with a back temperature below 152°C while enduring 1300°C on the front side. The thermal conductivity of the gradient composite is 0.202 W m<sup>−1</sup> k<sup>−1</sup>. Furthermore, the gradient C<sub>f</sub>/(CrZrHfNbTa)C-SiC composite offers remarkable EMI shielding performance with mean total EMI shielding efficiency (SE<sub>T</sub>) larger than 45 dB in an ultra-wide frequency range of 0–100 GHz. The excellent multifunctional performance with ultra-lightweight makes the gradient C<sub>f</sub>/(CrZrHfNbTa)C-SiC composite ideal thermal protection materials for hypersonic vehicles. This work provides a flexible strategy for constructing gradient composites for multifunctional applications.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"20 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143775722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"BNT-based ceramics with large strain and low hysteresis over a wide temperature range","authors":"Gensheng Dong, Xiujuan Lin, Qi Li, Yaoting Zhao, Hang Luo, Dou Zhang, Changhong Yang, Shifeng Huang","doi":"10.1016/j.jmst.2025.02.044","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.02.044","url":null,"abstract":"The incompatibility between large electro-strain and low-strain hysteresis, in addition to the poor temperature stability of piezoelectric ceramics, limits the development of high-precision piezoelectric actuators. In this work, Bi<sub>0.465</sub>Na<sub>0.465</sub>Ba<sub>0.07</sub>Ti<sub>1−2</sub><em><sub>x</sub></em>Ga<em><sub>x</sub></em>Sb<em><sub>x</sub></em>O<sub>3</sub> (abbreviated as BNBT7-<em>x</em>GS, <em>x</em> = 0, 0.01, 0.02, 0.03, 0.04, and 0.06) ceramics were designed. Specifically, when <em>x</em> = 0.02, the ceramics exhibit a critical state in the relaxor ferroelectric system with a typical relaxor <em>P</em>−<em>E</em> loop and an <em>I</em>−<em>E</em> curve of four peaks. At this composition, the room temperature strain is 0.4 %, which is capable of enhancing the electro-strain and reducing the hysteresis simultaneously. Furthermore, over the wide temperature range from 30 to 180°C, the minimum strain hysteresis (<em>H</em><sub>ys</sub>) is 7.13 %, and the maximum strain variation is only 16.8 %, demonstrating ultra-high temperature stability. This work introduces a model for addressing the dilemma between good electro-strain properties and insufficient temperature stability in lead-free piezoelectric ceramics, crucial for the development of modern high-precision actuators.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"21 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qinqin Zhou, Hongzheng Li, Yijie Gao, Peng Hu, Jinshu Wang
{"title":"Fabrication of yttrium aluminum garnet phosphor by thermal plasma: A rapid and scalable strategy for multicomponent materials","authors":"Qinqin Zhou, Hongzheng Li, Yijie Gao, Peng Hu, Jinshu Wang","doi":"10.1016/j.jmst.2025.02.041","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.02.041","url":null,"abstract":"We demonstrate a case study of Ce-doped yttrium aluminum garnet (YAG) phosphor to illustrate a novel plasma route for the synthesis of multicomponent materials with addressing morphology and structural control. The presented strategy was started directly from liquid precursors without any precipitating agents, and an innovative growth mechanism was proposed to explain the formation of monodispersed spherical particles with an adjusted size distribution. Homogeneous elemental distribution close to that of liquid precursors was also achieved due to the thermal nonequilibrium effect in plasma. Benefiting from the structural feature of the obtained product, a low transformation temperature of 1100°C for YAG phase was obtained and final products exhibit the highest photoluminescence intensity with rather low Ce doping of 0.5 wt.%, together with excellent thermal stability of 92 % preservation of initial emission at 473 K. This work well illustrates the advance of plasma strategy in formation of multicomponent compounds with excellent performances, and its potential for large-scale production due to the transient and in-flight synthesis process.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"55 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758155","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abdelhakim Cherqaoui, Francesco Copes, Carlo Paternoster, Simon Gélinas, Paolo Mengucci, Carl Blais, Diego Mantovani
{"title":"Effect of powder preparation on degradation behavior and cytotoxicity of sintered porous biodegradable FeMnC alloys for biomedical applications","authors":"Abdelhakim Cherqaoui, Francesco Copes, Carlo Paternoster, Simon Gélinas, Paolo Mengucci, Carl Blais, Diego Mantovani","doi":"10.1016/j.jmst.2025.03.016","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.03.016","url":null,"abstract":"Biodegradable implants have emerged in biomedical applications, particularly for orthopedic fixations, cardiovascular stents, and tissue engineering scaffolds. Unlike permanent implants, they are designed to degrade and be reabsorbed after implantation in the body, mitigating the need for additional surgeries and reducing associated complications. In particular, Fe-Mn-C alloys constitute a new class of promising metallic materials for medical applications due to their outstanding mechanical properties and their biological performances. This study focuses on improving the degradation rates and cytotoxicity of sintered Fe-Mn-C alloys produced using the powder metallurgy process. To evaluate the impact of different powder preparation methods on material properties, two types of powders were used: (1) MX, prepared by mixing Fe, Mn, and C powders for 1 h; and (2) MM, obtained by mechanically milling the same powders for 10 h. Four mixtures with varying proportions of MX and MM were prepared. Two groups of samples were produced: one entirely from MX (A0), and another containing MM at 25 wt.% (A25), 50 wt.% (A50), and 75 wt.% (A75). All samples exhibited a complex microstructure comprising ferrite, martensite, and residual austenite. Degradation behavior assessment in Hanks’ solution over 14 days showed that adding MM increased the degradation rate, from around 0.04 mmpy for A0 to 0.12 mmpy for A25. Notably, all samples showed similar cell viability, in the range of 83%–89% for 1% extract dilution, and were non-hemolytic, with a hemolysis percentage below 1%.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"216 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143766678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qiang-Qiang Zhao, Tian-Yu Zhang, Chaoqun Ma, Ibrar Ahmed, Han Wang, Bo Sun, Chi Liu, Chang Liu, Hui-Ming Cheng, You Zeng
{"title":"In-situ growth of metal organic framework on hollow graphene foam for high-efficiency microwave absorption","authors":"Qiang-Qiang Zhao, Tian-Yu Zhang, Chaoqun Ma, Ibrar Ahmed, Han Wang, Bo Sun, Chi Liu, Chang Liu, Hui-Ming Cheng, You Zeng","doi":"10.1016/j.jmst.2025.03.017","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.03.017","url":null,"abstract":"The demand for lightweight, thin, and broadband microwave absorption materials has been growing rapidly with advancements in microelectronics and aerospace technology. Conventional microwave-absorbing materials often suffer from poor dispersion and limited electromagnetic attenuation capacity. Herein, we report a novel microwave absorption material that integrates ZIF-67-derived metal organic frameworks (MOFs) with hollow graphene foams (GrFs) synthesized via chemical vapor deposition. The hollow GrFs act as resonant cavities in enhancing multiple reflections and conductive loss, while the MOFs optimize impedance matching for highly efficient microwave absorption. The MOF@GrF-filled paraffin composites achieve a minimum reflection loss (RL<sub>min</sub>) of −50.2 dB at a thickness of 1.3 mm and 7.1 wt.% filler loading, with an impressive microwave absorption efficiency of −38.6 dB/mm. This superior performance is attributed to the synergistic interactions between GrFs and MOFs, integrating conductive loss, cavity confinement, dipole polarization, interfacial polarization, magnetic loss, and improved impedance matching. This study paves a way for fabricating high-efficiency microwave absorption materials for application in fields of aerospace, medical equipment, and electronic industry.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"32 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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 model to predict oxidation behavior of superalloys based on machine learning","authors":"Chenghao Pei, Qingshuang Ma, Jingwen Zhang, Liming Yu, Huijun Li, Qiuzhi Gao, Jie Xiong","doi":"10.1016/j.jmst.2025.01.071","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.071","url":null,"abstract":"Oxidation resistance is a critical metric for assessing the high-temperature property of superalloys. Traditional models are often constrained by the parabolic rate law, limiting their ability to simulate complex oxidation behavior. This study introduces a hybrid machine learning model that combines a one-dimensional convolutional neural network with a long short-term memory network to predict oxidation behavior with high accuracy (<em>R</em><sup>2</sup> = 0.981) and smoothness. The model demonstrates improved predictive performance across various stages of oxidation, successfully fitting a wide range of oxidation kinetics and accurately estimating the activation energy for the Co-9W-9Al-0.12B alloy. It also identifies the critical Cr content range for the transition from internal to external oxidation in Co-based superalloys, which aligns well with experimental results and theoretical calculations. Although this study focuses on Co-based superalloys, the versatility extends its applicability to other superalloy systems, paving the way for future research in materials science.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"75 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Laser-implanted short fiber-like interface structure for strengthening welded-brazed joint of Al/steel dissimilar metals","authors":"Lize Li, Jianyu Li, Shuhai Chen, Shujun Chen, Jian Yang, Jihua Huang, Gaoyang Yu","doi":"10.1016/j.jmst.2025.01.069","DOIUrl":"https://doi.org/10.1016/j.jmst.2025.01.069","url":null,"abstract":"The lamellar layer of intermetallic compounds (IMCs) was adversely affected the performance of welding-brazing joints in Al/steel dissimilar metals. In this study, a short fiber-like surface morphology was fabricated on the butt surface of Q235 steel via laser. The interaction behavior between the short fibers and the molten pool was captured using a high-speed camera. Laser-arc hybrid welding-brazing was then employed to join Al (6061-T6) to the steel. This process successfully created a short fiber-like interface structure at the joint. The relationship between microstructure and mechanical properties was investigated, compared with Al/bare steel (ABS) joint. The research results indicated that the IMCs layer consisted of FeAl<sub>3</sub> and Fe<sub>2</sub>Al<sub>5</sub>. The interface strength of the Al/short fiber-like surface structural steel (ASFSSS) joint reached 153.2 MPa, an 82.2% increase compared to the ABS joint, which reached 84.1 MPa. When the ASFSSS joints without the reinforcement were bent to 58.2° and 25.2° in the longitudinal and transverse direction, respectively, they remained intact. However, cracks were discovered when the bending angle of the ABS reached 39.1° and 0° in the two directions. Numerical simulation revealed that the short fiber-like interface structure significantly reduced residual stress and improved the stress distribution in the weld, thereby enhancing the strength and toughness of Al/steel dissimilar joints. The crack propagation path in the ASFSSS joint was deflected into the weld when it encountered short fibers, and the fracture morphology presented the characteristic of ductile-brittle mixed fracture.","PeriodicalId":16154,"journal":{"name":"Journal of Materials Science & Technology","volume":"1 1","pages":""},"PeriodicalIF":10.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}