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学者姓名:韩晓东

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< Page ,Total 63 >
Negative enthalpy alloys and local chemical ordering: a concept and route leading to synergy of strength and ductility SCIE
期刊论文 | 2024 , 11 (4) | NATIONAL SCIENCE REVIEW
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Abstract :

Solid solutions are ubiquitous in metals and alloys. Local chemical ordering (LCO) is a fundamental sub-nano/nanoscale process that occurs in many solid solutions and can be used as a microstructure to optimize strength and ductility. However, the formation of LCO has not been fully elucidated, let alone how to provide efficient routes for designing LCO to achieve synergistic effects on both superb strength and ductility. Herein, we propose the formation and control of LCO in negative enthalpy alloys. With engineering negative enthalpy in solid solutions, genetic LCO components are formed in negative enthalpy refractory high-entropy alloys (RHEAs). In contrast to conventional 'trial-and-error' approaches, the control of LCO by using engineering negative enthalpy in RHEAs is instructive and results in superior strength (1160 MPa) and uniform ductility (24.5%) under tension at ambient temperature, which are among the best reported so far. LCO can promote dislocation cross-slip, enhancing the interaction between dislocations and their accumulation at large tensile strains; sustainable strain hardening can thereby be attained to ensure high ductility of the alloy. This work paves the way for new research fields on negative enthalpy solid solutions and alloys for the synergy of strength and ductility as well as new functions. Negative enthalpy alloys act as a new concept and route for introducing various degree of local chemical ordering heterostructures, leading to superb synergy of strength and ductility.

Keyword :

local chemical ordering local chemical ordering dislocation dislocation negative enthalpy alloys negative enthalpy alloys strength strength ductility ductility

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GB/T 7714 An, Zibing , Yang, Tao , Shi, Caijuan et al. Negative enthalpy alloys and local chemical ordering: a concept and route leading to synergy of strength and ductility [J]. | NATIONAL SCIENCE REVIEW , 2024 , 11 (4) .
MLA An, Zibing et al. "Negative enthalpy alloys and local chemical ordering: a concept and route leading to synergy of strength and ductility" . | NATIONAL SCIENCE REVIEW 11 . 4 (2024) .
APA An, Zibing , Yang, Tao , Shi, Caijuan , Mao, Shengcheng , Wang, Lihua , Li, Ang et al. Negative enthalpy alloys and local chemical ordering: a concept and route leading to synergy of strength and ductility . | NATIONAL SCIENCE REVIEW , 2024 , 11 (4) .
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一种第五代镍基单晶高温合金及其热处理方法 incoPat
专利 | 2023-07-20 | CN202310895937.9
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本发提供一种第五代镍基单晶高温合金及其热处理方法。按质量百分比包括:Cr:2.0~5.0%,Al:4.0~7.0%,Co:7.0~12.0%,Mo:1.0~3.5%,Ti:0.5~2.0%,Ta:6.0~9.0%,W:3.0~7.0%,Re:4.0~6.5%,Ru:4.0~6.5%,Hf:0~0.1%,其中Ta/Al为1.3‑1.5,其余为Ni和不可避免的杂质;采用连续式升温固溶处理,当温度升至1295℃~1305℃后,以2.5℃~5.0℃/h的升温速率升温至1345℃~1355℃。该合金具有优异的高温蠕变性能,其在1110℃,137MPa条件下蠕变寿命可达748h,达到国际第五代合金的水平。

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GB/T 7714 龙海波 , 赵俊博 , 韩晓东 et al. 一种第五代镍基单晶高温合金及其热处理方法 : CN202310895937.9[P]. | 2023-07-20 .
MLA 龙海波 et al. "一种第五代镍基单晶高温合金及其热处理方法" : CN202310895937.9. | 2023-07-20 .
APA 龙海波 , 赵俊博 , 韩晓东 , 张泽 . 一种第五代镍基单晶高温合金及其热处理方法 : CN202310895937.9. | 2023-07-20 .
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原位测量金属材料的力学性能及微观结构的装置及方法 incoPat
专利 | 2023-06-07 | CN202310675436.X
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本发明公开了一种在透射电子显微镜中,为纳米金属样品提供原子级原位等静压力学性能测试的装置及方法。本发明属于纳米材料显微结构原位测试及表征技术领域。本发明创新性地设计了一种新的等静压容器装置:采用微操作技术将纳米金属样品加载并封装在两个碳纳米锥中间,即可获得一种等静压容器。更重要的是,该设计还创新性地实现了金属样品在透射电子显微镜中的原位等静压力学性能测试:通过探针挤压碳纳米锥的侧壁,对等静压环境中的金属样品施加等静压力,从而实现金属样品在透射电子显微镜中的原位等静压力学性能测试,静压大小可控。

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GB/T 7714 王立华 , 李超杰 , 徐建勋 et al. 原位测量金属材料的力学性能及微观结构的装置及方法 : CN202310675436.X[P]. | 2023-06-07 .
MLA 王立华 et al. "原位测量金属材料的力学性能及微观结构的装置及方法" : CN202310675436.X. | 2023-06-07 .
APA 王立华 , 李超杰 , 徐建勋 , 韩晓东 , 赵宇亮 . 原位测量金属材料的力学性能及微观结构的装置及方法 : CN202310675436.X. | 2023-06-07 .
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Interfacial diffusion and Kirkendall voids evolution in the Copper-Zinc alloy binary interface revealed by in situ transmission electron microscopy SCIE
期刊论文 | 2023 , 968 | JOURNAL OF ALLOYS AND COMPOUNDS
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Investigating the diffusion behavior of binary system is crucial for understanding the solid-state diffusion in metallic joints, as it affects the interfacial reaction that forms intermetallic components (IMCs) and introduces Kirkendall voids that change the interfacial microstructures. In this study, we intuitively investigated the interfacial diffusion behavior of Copper-Zinc alloy binary interface by in situ transmission electron microscopy. Our findings revealed the interfacial diffusion of atoms, the growth processes of intermetallic phases, and the evolution of the Kirkendall voids during thermal diffusion. We observed that the Zn atoms diffuse rapidly into Cu and form the 13 phase at the onset of thermal diffusion at 200 & DEG;C. Additionally, with increasing temperature, Cu atoms control the diffusion and the formation of IMCs due to their higher diffusion coefficient in the 13 and & alpha; phases, which are 2.09 & PLUSMN; 0.63 x 10-16 m2/s at 250 & DEG;C and 3.44 & PLUSMN; 0.44 x 10-17 m2/s at 300 & DEG;C, respectively. Furthermore, we found that the interface significantly influences the interdiffusion rates of the IMCs and the formation of Kirkendall voids. The emergence of voids, which are formed at the initial defective site and the IMC layer at the temperature of 250 and 300 & DEG;C, respectively, leading to a considerable decrease in interdiffusion at the binary interface of two orders of magnitude in comparison to unaffected regions. Moreover, we revealed the evolution of Kirkendall void, involving the formation and merging of holes, as well as the gradual thinning of atomic layers during diffusion. These findings are essential for understanding the formation and evolution of IMCs and Kirkendall void in binary interfaces.

Keyword :

Intermetallic components Intermetallic components Cu-Zn alloy interface Cu-Zn alloy interface Kirkendall void Kirkendall void Interfacial diffusion Interfacial diffusion In situ transmission electron microscopy In situ transmission electron microscopy

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GB/T 7714 Xie, Lilin , Lu, Hui , Jiao, Yilin et al. Interfacial diffusion and Kirkendall voids evolution in the Copper-Zinc alloy binary interface revealed by in situ transmission electron microscopy [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 968 .
MLA Xie, Lilin et al. "Interfacial diffusion and Kirkendall voids evolution in the Copper-Zinc alloy binary interface revealed by in situ transmission electron microscopy" . | JOURNAL OF ALLOYS AND COMPOUNDS 968 (2023) .
APA Xie, Lilin , Lu, Hui , Jiao, Yilin , Qiao, Shihang , Zheng, Yisheng , Li, Ang et al. Interfacial diffusion and Kirkendall voids evolution in the Copper-Zinc alloy binary interface revealed by in situ transmission electron microscopy . | JOURNAL OF ALLOYS AND COMPOUNDS , 2023 , 968 .
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透射电镜用原位拉伸样品保护装置及其制备方法 incoPat
专利 | 2022-06-14 | CN202210674942.2
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本发明提供一种透射电镜用原位拉伸样品保护装置及其制备方法,包括设置在MEMS力学芯片上的第一搭载侧、第二搭载侧,还包括第一拉伸辅助件、第二拉伸辅助件和载物件;第一拉伸辅助件连接MEMS力学芯片的第一搭载侧,载物件两端分别连接第二拉伸辅助件和第二搭载侧;第一拉伸辅助件与第二拉伸辅助件相嵌套成勾套结构。本发明通过在MEMS力学芯片上搭载原料块,然后切割,得到第一拉伸辅助件、第二拉伸辅助件以及载物件,并且保证第一拉伸辅助件嵌套于第二拉伸辅助件内部,形成勾套结构,由于形成了载物件,使得整个勾套自由选材,可对一维、二维材料及块状材料拉伸;设置载物件,可有效防止样品在拉伸断裂后掉落,避免透射电镜被污染。

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GB/T 7714 韩晓东 , 张家宝 , 张剑飞 et al. 透射电镜用原位拉伸样品保护装置及其制备方法 : CN202210674942.2[P]. | 2022-06-14 .
MLA 韩晓东 et al. "透射电镜用原位拉伸样品保护装置及其制备方法" : CN202210674942.2. | 2022-06-14 .
APA 韩晓东 , 张家宝 , 张剑飞 , 毛圣成 , 李志鹏 . 透射电镜用原位拉伸样品保护装置及其制备方法 : CN202210674942.2. | 2022-06-14 .
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Mn掺杂Cs2CdCl4闪烁体 incoPat
专利 | 2022-12-29 | CN202211714911.1
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本发明提供一种Mn掺杂Cs2CdCl4闪烁体。所述Mn掺杂Cs2CdCl4闪烁体以Cs2CO3、CdCl2、MnCl2为原料经溶液法搅拌后再加热制得。本发明方法制备的Mn掺杂Cs2CdCl4(Cs2CdCl4:Mn)的纯度高,且工艺简单、制备成本低、适于大批量制备生产。

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GB/T 7714 严铮洸 , 王超 , 肖家文 et al. Mn掺杂Cs2CdCl4闪烁体 : CN202211714911.1[P]. | 2022-12-29 .
MLA 严铮洸 et al. "Mn掺杂Cs2CdCl4闪烁体" : CN202211714911.1. | 2022-12-29 .
APA 严铮洸 , 王超 , 肖家文 , 韩晓东 , 王颖 . Mn掺杂Cs2CdCl4闪烁体 : CN202211714911.1. | 2022-12-29 .
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高温下兼具优秀力学性能和抗氧化的高熵合金及制备方法 incoPat
专利 | 2022-04-18 | CN202210406782.3
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本发明涉及高熵合金领域,具体涉及一种高温下兼具优秀力学性能和抗氧化的高熵合金及制备方法。所述高熵合金的化学式记为(HfNbTiV)100‑xAlx,其中X=0~10。本发明的高熵合金在室温及高温下兼具高拉伸屈服强度、高拉伸塑性和抗氧化的优秀性能。当所述高熵合金中含有Al时,高熵合金在室温及高温下兼具高拉伸屈服强度、高拉伸塑性、抗氧化和低密度的优秀性能。其在航空航天,国防军事等重大领域具有较大的应用潜力。

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GB/T 7714 毛圣成 , 安子冰 , 韩晓东 et al. 高温下兼具优秀力学性能和抗氧化的高熵合金及制备方法 : CN202210406782.3[P]. | 2022-04-18 .
MLA 毛圣成 et al. "高温下兼具优秀力学性能和抗氧化的高熵合金及制备方法" : CN202210406782.3. | 2022-04-18 .
APA 毛圣成 , 安子冰 , 韩晓东 , 张泽 . 高温下兼具优秀力学性能和抗氧化的高熵合金及制备方法 : CN202210406782.3. | 2022-04-18 .
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一种贵金属衬底的异相化单位点制备方法 incoPat
专利 | 2022-11-18 | CN202211447913.9
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本发明提供一种贵金属衬底的异相化单位点制备方法。在水和或溶剂中,加入具有官能团修饰的均相钨、钼金属配合物的单位点,即金属单原子或金属单一团簇,配体是可以与金属配位的含有氧/硫/氮的化合物分子,即均匀分散在溶剂中的金属氧/硫/氮化物,制成均相络合物溶液。在该溶液中,加入带有表面缺陷的衬底材料后,利用静置冷冻/加热或pH或加电压方式,将均相位点负载在衬底材料表面的缺陷或缝隙处,形成异相化制备。

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GB/T 7714 王聪 , 李昂 , 冯奕博 et al. 一种贵金属衬底的异相化单位点制备方法 : CN202211447913.9[P]. | 2022-11-18 .
MLA 王聪 et al. "一种贵金属衬底的异相化单位点制备方法" : CN202211447913.9. | 2022-11-18 .
APA 王聪 , 李昂 , 冯奕博 , 高钰航 , 韩晓东 . 一种贵金属衬底的异相化单位点制备方法 : CN202211447913.9. | 2022-11-18 .
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一种透射电镜中原位测量一维纳米材料疲劳性能与微观结构相关性的装置及方法 incoPat
专利 | 2022-07-28 | CN202210898463.9
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一种透射电镜中原位测量一维纳米材料疲劳性能与微观结构相关性的装置及方法,属于纳米材料显微结构原位测试及表征技术领域。包括芯片部分,支撑部分和操控电路三部分。支撑部分为安装在透射样品杆上的支架和排线,电路部分为与芯片链接的导线和能够施加不同波形、可变电压与可变频率的电源。本设计突破了传统的机械应力驱动疲劳性能的测试方法,利用电压形成的电场并通过调节电压的大小和频率,实现不同振幅和周期的可控调节,使一维纳米材料在电场中发生振动实现疲劳性能的测试;同时利用透射电镜原位观察一维纳米材料疲劳实验过程中原子层次微观结构的演变过程,直接建立疲劳性能与微观结构的相关性。

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GB/T 7714 王立华 , 马琰 , 韩晓东 et al. 一种透射电镜中原位测量一维纳米材料疲劳性能与微观结构相关性的装置及方法 : CN202210898463.9[P]. | 2022-07-28 .
MLA 王立华 et al. "一种透射电镜中原位测量一维纳米材料疲劳性能与微观结构相关性的装置及方法" : CN202210898463.9. | 2022-07-28 .
APA 王立华 , 马琰 , 韩晓东 , 邓青松 . 一种透射电镜中原位测量一维纳米材料疲劳性能与微观结构相关性的装置及方法 : CN202210898463.9. | 2022-07-28 .
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原位透射电镜电学液体芯片 incoPat
专利 | 2022-11-30 | CN202223206546.1
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本实用新型涉及原位透射电镜技术领域,提供一种原位透射电镜电学液体芯片,包括:功能芯片、盖板芯片和盖板;功能芯片包括:第一基底、第一薄膜承载层和金属电极层,金属电极层包括工作电极、对电极和参比电极导线;钝化保护层,部分覆盖第一薄膜承载层和金属电极层;盖板芯片包括:第二基底和第二薄膜承载层;盖板设置于功能芯片的顶部,覆盖储液槽。本实用新型提供的原位透射电镜电学液体芯片,在实现液体环境施加的基础上,将传统电化学领域的三电极测试体系引入透射电镜,可对液体环境中样品的电化学行为进行原子尺度原位动态观测的同时,完成电学信号的精确控制及采集。

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GB/T 7714 韩晓东 , 王梦龙 , 张剑飞 et al. 原位透射电镜电学液体芯片 : CN202223206546.1[P]. | 2022-11-30 .
MLA 韩晓东 et al. "原位透射电镜电学液体芯片" : CN202223206546.1. | 2022-11-30 .
APA 韩晓东 , 王梦龙 , 张剑飞 , 杨晓萌 , 田志永 . 原位透射电镜电学液体芯片 : CN202223206546.1. | 2022-11-30 .
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