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| l 增材制造 由于激光焊接與激光粉末床增材制造（L-PBF）技術(shù)有一些共同的特點(diǎn)，例如熔池冷卻時(shí)間短、冷卻速度快，因此我開(kāi)始專(zhuān)注于研究L-PBF技術(shù)的“工藝-組織-性能”關(guān)系。結(jié)合原位合金化、在線(xiàn)監(jiān)測(cè)、機(jī)器學(xué)習(xí)、多尺度模擬等方法，已制備出高/中熵合金、高強(qiáng)度鋁合金、鈦合金。這些研究成果為制造高強(qiáng)度、高延展性金屬合金/復(fù)合材料開(kāi)辟了新途徑，對(duì)學(xué)術(shù)界和工業(yè)界具有重要價(jià)值。 代表作： Shaohua Yan, Xipei He, Manja Krüger, Yusen Li, Qiang Jia, Additive manufacturing of a new non-equiatomic high-entropy alloy with exceptional strength-ductility synergy via in-situ alloying, Materials & Design 238 (2024) 112676. Shaohua Yan*, Zhaosong Zhang, Qinghua Qin, Additive manufacturing of strong and ductile NiCoCr medium-entropy alloy via in-situ alloying nanoparticles, Materials Science and Engineering: A 941 (2025) 148616. l 微納米力學(xué) 國(guó)際上，首次采用微納米力學(xué)實(shí)驗(yàn)對(duì)焊接接頭的單晶力學(xué)行為進(jìn)行研究，從原理上揭示接頭的變形機(jī)理和強(qiáng)韌化機(jī)制，為調(diào)控接頭力學(xué)行為提供基礎(chǔ)理論參考。通過(guò)多尺度試驗(yàn)和晶體塑性有限元模擬相結(jié)合的方式，為研究焊接結(jié)構(gòu)的力學(xué)行為提供新的研究思路。 代表作： （1）Hong Li, Yusen Li, Yuan Nie, Shaohua Yan*，Small-scale mechanical properties and deformation mechanisms of a laser welded CrCoNi medium-entropy alloy joint, Materials Science and Engineering: A 855 (2022) 143959. (JCR Q1, IF=6.1) （2）Shaohua Yan, Haiyang Zhou, Bobin Xing, Shuang Zhang, Li Li, Qing .H Qin, Crystal plasticity of fusion zone in a hybrid laser welded Al alloys joint: from nanoscale to macroscale, Materials and Design 160 (2018) 313-324. (JCR Q1, IF=7.6)
l 先進(jìn)合金激光焊接接頭組織與性能的定量關(guān)系
該研究領(lǐng)域涉及使用 EBSD 和 TEM 等高分辨率電子顯微鏡對(duì)接頭的微觀(guān)組織結(jié)構(gòu)進(jìn)行多尺度表征。機(jī)械性能包括拉伸強(qiáng)度、疲勞強(qiáng)度和耐腐蝕性。研究結(jié)果揭示了微觀(guān)結(jié)構(gòu)與性能的定量關(guān)系，可用于學(xué)術(shù)界和工業(yè)界選擇先進(jìn)的焊接工藝來(lái)制造具有高可靠性和耐用性的工程部件。
代表作： Shaohua Yan, Hui Chen, Zongtao Zhu, Guoqing Gou, Hybrid laser-metal inert gas welding of Al-Mg-Si alloys joint: microstructure and mechanical properties, Materials & Design 61 (2014) 160-167. (JCR Q1, IF=7.6) l 原位調(diào)控鋁合金激光復(fù)合焊接接頭的組織與性能 在攻讀博士學(xué)位期間，我研發(fā)了一種新穎的原位焊接方法來(lái)調(diào)控激光電弧焊接鋁合金接頭的微觀(guān)結(jié)構(gòu)和機(jī)械性能。通過(guò)調(diào)整填充材料的化學(xué)元素，在焊接過(guò)程中改變接頭的晶粒尺寸、位錯(cuò)密度、析出物等微觀(guān)結(jié)構(gòu)，從而提高機(jī)械性能。此外，通過(guò)工藝參數(shù)優(yōu)化，顯著地減少了氣孔等缺陷，有利于提升接頭的抗疲勞性能。 代表作： Shaohua Yan, Bobin Xing, Haiyang Zhou, Yi Xiao, Qing. H Qin, Hui Chen, Effect of filling materials on the microstructure and properties of hybrid laser welded Al-Mg-Si alloys joints, Materials Characterization 144 (2018) 205-218. (JCR Q1, IF=4.8)
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| 2025 1. Shaohua Yan*, Zhaosong Zhang, Qinghua Qin, Additive manufacturing of strong and ductile NiCoCr medium-entropy alloy via in-situ alloying nanoparticles, Materials Science and Engineering: A 941 (2025) 148616. 2. Yan Zhu, Yusen Li, Zhongwei Yan, Changhui Song, Jindong Tian, Shaohua Yan*, Achieving exceptional strength-ductility synergy in a 3D-printed CrCoNi medium-entropy alloy with machine-learning assistance, Materials Characterization 223 (2025) 114990. 3. Guanming Xie, Weixin Ma, Yueqiang Zhang, Sanhong Wang, You Li, Biao Hu, Shaohua Yan, Yu Fu, Qifeng Yu, Keyhole morphology monitoring in laser welding using optical coherence tomography, Chinese Optics Letters 23 (2025) 031201. 4. Shaohua Yan, Zonghan Xie, Qing-Hua Qin, Unlocking theoretical strength and ductility in sapphire nanopillars: Insights into size-dependent deformation mechanisms, Journal of Alloys and Compounds 1010 (2025) 177183.
2024 5. Hongmei Zhou, Shaohua Yan*, Zhongyin Zhu, Enhanced Strength–Ductility Combination in Laser Welding of CrCoNi Medium-Entropy Alloy with Ultrasonic Assistance, Metals 14 (2024) 971. 6. Hong Li, Shaohua Yan*, Yu Fu*, Data-fusion for in-situ monitoring and molten state identification during LPBF of NiCoCr medium-entropy alloy, Scientific Reports 14 (2024) 14697. (JCR Q1, IF=3.8) 7. Shaohua Yan, Xipei He, Manja Krüger, Yusen Li, Qiang Jia, Additive manufacturing of a new non-equiatomic high-entropy alloy with exceptional strength-ductility synergy via in-situ alloying, Materials & Design 238 (2024) 112676. (JCR Q1, IF=7.6)
2023 8. Shaohua Yan, Yuan Nie, Anna Paradowska, Effect of size and orientation on the nano/microscale mechanical property and deformation behavior of CrCoNi medium-entropy alloy, Materials & Design, 235 (2023)112387. (JCR Q1, IF=7.6) 9. Shaohua Yan, Xipei He, Zhongyin Zhu, Hydrogen embrittlement of CrCoNi medium-entropy alloy with millimeter-scale grain size: an in-situ hydrogen charging study, Entropy 25 (2023), 673. (JCR Q2, IF=2.1) 10. Shaohua Yan, Thomas D Bennett, Weipeng Feng, Zhongyin Zhu, Dingcheng Yang, Zheng Zhong, Qing H Qin, Brittle-to-ductile transition and theoretical strength in a metal-organic framework glass, Nanoscale 15 (2023) 8235-8244. (JCR Q1, IF=5.8)
2022 11. Hong Li, Yusen Li, Yuan Nie, Shaohua Yan*，Small-scale mechanical properties and deformation mechanisms of a laser welded CrCoNi medium-entropy alloy joint, Materials Science and Engineering: A 855 (2022) 143959. (JCR Q1, IF=6.1) 12. Shaohua Yan, Qing H Qin, Zheng Zhong, Tailoring small-scale plasticity and deformation behavior of nanotwined-copper micropillars via microstructures, Journal of Applied Physics, 132 (2022) 135102. (JCR Q2, IF=2.7) 13. Shaohua Yan, Haiyang Zhou, Zhongyin Zhu, Yu Fu, Jindong Tian, High strength-ductility synergy in a laser welded dissimilar joint of CrCoNi medium-entropy alloy and stainless steel, Materials Science and Engineering: A 840 (2022) 142854. (JCR Q1, IF=6.1)
2021 14. Shaohua Yan, Ahmad Nawaz, Bilal Islam, Qing-Hua Qin, Weiguo Mao, Yaogen Shen, Ishaq Ahmad, Iftikhar Hussain, Elastic-plastic deformation behavior of sapphire M-plane under static loading using nano-indentation, Ceramics International 47(2021) 23528-23538. (JCR Q1, IF=5.1) 15. Qiang Jia, Guisheng Zou, Hongqiang Zhang, Wengan Wang, Hui Ren, Zhanwen A, Zhongyang Deng, Shaohua Yan, Daozhi Shen, Lei Liu, Sintering mechanism of Ag-Pd nanoalloy film for power electronic packaging, Applied Surface Science 554 (2021) 149579. (JCR Q1, IF=6.3) 16. Zhongyin Zhu, Shaohua Yan*, Hui Chen, Guoqing Gou*, Unprecedented combination of strength and ductility in laser welded NiCoCr medium entropy alloy joints, Materials Science and Engineering: A 803 (2021) 140501. (JCR Q1, IF=6.1) 發(fā)明專(zhuān)利(部分)： 1.閆少華，聶媛；一種 高 強(qiáng) 高 韌MOF 玻 璃 的 制 備 方 法 及 其 所 制 備 的 M O F 玻 璃. 授權(quán)專(zhuān)利號(hào): ZL202111044400.9 2.閆少華，聶媛；一種高強(qiáng)韌非等原子比 FeCoCrNi 高熵合金的增材制造方法. 申請(qǐng)?zhí)?/span>:202310725553.2 3.閆少華,聶媛,何錫沛；一種具有優(yōu)異高溫力學(xué)性能的納米 TiC 增強(qiáng) 316L 不銹鋼. 申請(qǐng)?zhí)?/span>:202411358077.6 4.朱燕,閆少華; 一種激光選區(qū)熔化技術(shù)成型件力學(xué)性能預(yù)測(cè)方法. 申請(qǐng)?zhí)?/span>:202510136770.7 5.閆少華,朱燕,李勤兵,鄭燕,秦慶華, 一種基于機(jī)器學(xué)習(xí)調(diào)控 SLM 增材制造中飛濺缺陷的方法. 申請(qǐng)?zhí)?/span>:202510391091.4 6.袁定華,閆少華,張照松,秦慶華, 一種納米 TiB2 增強(qiáng) CoCrNi 中熵合金及其制備方法, 申請(qǐng)?zhí)?/span>:202510561104.8. |
