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Ultrasonic vibration enabled under-liquid forming of metallic glasses

Science Bulletin 2024年第2期69卷 163-166页

作者： Xin Li Luyao Li sajad sohrabi Jia'nan Fu Zhen Li Zhe Chen Rongce Sun Yu Zhang Jinbiao Huang Heting Zhang Jian Zhu Xiangyan Chen Kaikai Song Jiang Ma School of Mechanical Electrical&Information EngineeringShandong UniversityWeihai 264209China State Key Laboratory of Radio Frequency Heterogeneous Integration College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Department of Mechanics and Aerospace Engineering Southern University of Science and TechnologyShenzhen 518055China Shenzhen Research Institute of Shandong University Shenzhen 518057China

Advancements in forming technology offer significant advantages for the manufacturing industry,including enhanced efficiency,energy conservation,and improved material utilization[1].However,traditional additive manufacturing[2],thermoplastic forming[3],and laser cutting[4]encounter challenges when applied in under-liquid environments,mainly due to difficulties in temperature control and heat source provision.

关键词： glasses liquid metallic

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Absence of ultrasonic-vibration-induced plasticity in metallic glacial glasses

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Rare Metals 2024年第7期43卷 3422-3429页

作者： Zhe Chen Shuai Ren Jian Zhu Jie Shen Xin Li He-Ting Zhang Hong-Ji Lin sajad sohrabi Wen-Qing Ruan Zhen-Xuan Zhang Xiong Liang Jiang Ma Jun Shen Shenzhen Key Laboratory of High Performance Nontraditional Manufacturing College of Mechatronics and Control EngineeringShenzhen UniversityShenzhen 518060China Institute of Physics Chinese Academy of SciencesBeijing 100190China School of Mechanical Electrical and Information EngineeringShandong UniversityWeihai 264209China

Metallic glasses (MGs) have been found to exhibit unexpected ultrasonic-vibration-induced plasticity (UVIP),which provides a promising way to realize room temperature processing and molding of ***,whether all MGs poss... 详细信息

关键词： glasses metallic plasticity

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基于超声波振动的金属玻璃液下成形工艺（英文）

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Science Bulletin 2024年第2期 163-166页

作者：李信李路瑶 sajad sohrabi 傅佳男李真陈哲孙镕策张宇黄金标张贺亭朱健陈湘艳宋凯凯马将 School of Mechanical Electrical & Information Engineering Shandong University State Key Laboratory of Radio Frequency Heterogeneous Integration College of Mechatronics and Control Engineering Shenzhen University Department of Mechanics and Aerospace Engineering Southern University of Science and Technology Shenzhen Research Institute of Shandong University

Advancements in forming technology offer significant advantages for the manufacturing industry, including enhanced efficiency, energy conservation, and improved material utilization[1]. However, traditional additive manufacturing [2], thermoplastic forming [3], and laser cutting [4] encounter challenges when applied in under-liquid environments, mainly due to difficulties in temperature control and heat source provision.

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Serrated magnetic properties in metallic glass by thermal cycle

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Chinese Physics B 2017年第6期26卷 271-274页

作者：李明哲 sajad sohrabi 丁大伟董帮少周少雄汪卫华 Institute of Physics Chinese Academy of Sciences University of Chinese Academy of Sciences China Iron & Steel Research Institute Group Advanced Technology & Materials Co.Ltd.

Fe-based metallic glasses（MGs） with excellent soft magnetic properties are applicable in a wide range of electronic industry. We show that the cryogenic thermal cycle has a sensitive effect on soft magnetic properties of Fe78Si9B13 glassy ribbon. The values of magnetic induction（or magnetic flux density） B and Hc coercivity c show fluctuation with increasing number of thermal cycles. This phenomenon is explained as thermal-cycle-induced stochastically structural aging or rejuvenation which randomly fluctuates magnetic anisotropy and, consequently, the magnetic induction and coercivity. Overall,increasing the number of thermal cycles improves the soft magnetic properties of the ribbon. The results could help understand the relationship between relaxation and magnetic property, and the thermal cycle could provide an effective approach to improving performances of metallic glasses in industry.

关键词： amorphous soft magnetic materials rejuvenation aging cryogenic thermal cycling

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Ultra-fast amorphization of crystalline alloys by ultrasonic vibrations

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Journal of Materials Science & Technology 2023年第11期142卷 76-88页

作者： Luyao Li Guo-Jian Lyu Hongzhen Li Caitao Fan Wenxin Wen Hongji Lin Bo Huang sajad sohrabi Shuai Ren Xiong Liang Yun-Jiang Wang Jiang Ma Weihua Wang Guangdong Key Laboratory of Electromagnetic Control and Intelligent Robots Shenzhen UniversityShenzhen 518060China State Key Laboratory of Nonlinear Mechanics Institute of MechanicsChinese Academy of SciencesBeijing 100190China National Engineering Research Center of Near-net-shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China Institute of Materials School of Materials Science and EngineeringShanghai UniversityShanghai 200444China School of Engineering Science University of Chinese Academy of SciencesBeijing 101408China Songshan Lake Materials Laboratory Dongguan 523808China Institute of Physics Chinese Academy of SciencesBeijing 100190China

The amorphization of alloys is of both broad scientific interests and engineering *** considered as an efficient strategy to regulate and even achieve record-breaking properties of metallic materials,a facile and rapid method to trigger solid-state amorphization is still being *** we report such a method to utilize ultrasonic vibration to trigger amorphization of intermetallic *** ultrasonic vibrations can cause tunable amorphization at room temperature and low stress(2 MPa)***,the ultrasonic-induced amorphization could be achieved in 60 s,which is 360 times faster than the ball milling(2.16×10^(4) s)with the similar proportion of *** elements redistribute uniformly and rapidly via the activated short-circuit *** experimental evidences and simulations show that the amorphous phase initiates and expands at nanograin boundaries,owing to the induction of lattice *** work provides a groundbreaking strategy for developing novel materials with tunable structures and properties.

关键词： Amorphization Ultrasonic vibration Lattice instability Elemental diffusion

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应用新型工业化应力退火技术研究矩形纳米晶磁芯的磁性能

应用新型工业化应力退火技术研究矩形纳米晶磁芯的磁性能

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第十二届中国钢铁年会

作者：李雪松薛志勇 sajad sohrabi 汪卫华华北电力大学先进材料研究院先进材料研究院华北电力大学物理研究所中国科学院大学

人为施加机械应力或外加磁场的条件下对非晶和纳米晶磁环进行退火处理,可以改变材料的磁各向异性,显著影响磁化曲线的形状。这一特点使得非晶纳米晶磁环具有广阔的应用前景:从具有高饱和磁感应强度和稳定的、低的磁导率（具有较大磁各... 详细信息

人为施加机械应力或外加磁场的条件下对非晶和纳米晶磁环进行退火处理,可以改变材料的磁各向异性,显著影响磁化曲线的形状。这一特点使得非晶纳米晶磁环具有广阔的应用前景:从具有高饱和磁感应强度和稳定的、低的磁导率（具有较大磁各向异性）的扼流圈和电抗器,到需要高磁导率（具有低磁各向异性）的共模扼流圈。为了诱导磁各向异性,传统应力退火的方法是先对退火的过程中的带材施加应力,之后再卷绕成磁芯,但这种方法并不适用于具有直角曲率的矩形磁芯。本研究介绍了一种新型工业规模应力退火技术,先将带材卷绕成磁芯,对矩形磁芯预先施加应力后再进行常规热处理,改变矩形磁芯的磁各向异性。与无应力退火相比,应力退火后的磁芯具有较大的磁各向异性和较低的磁导率,随着外加应力的增加,磁各向异性逐渐增大,而磁导率逐渐减小。

关键词：纳米晶软磁合金应力退火磁各向异性

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