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| 1 | Hot Deformation and Subsequent Annealing on the Microstructure and Hardness of an Al0.3CoCrFeNi High-entropy Alloy显示文摘The infl uence of simple thermomechanical processing such as hot deformation and heat treatment on the microstructure and hardness of an Al0.3CoCrFeNi high-entropy alloy has been investigated.Results show that the relatively high deformation temperature can induce discontinuous dynamic recrystallization with fine grains initially nucleating at the elongated grain boundaries.The transition from partial recrystallization to fully recrystallization,as well as the precipitation behavior after annealing,has been described in detail.Both bcc precipitation and completely recrystallized grains can be observed after annealing at 1000℃.Based on detailed microstructure analysis,the decrease in hardness value is shown to be related to both dynamic recrystallization and dynamic recovery which lead to softening. | Jun Wang Hongchao Li Haoxue Yang Yu Zhang William Yi Wang Jinshan Li | 2021 | Acta Metallurgica Sinica(English Letters)2021，34，11： | 3 |
| 2 | Nanophase precipitation and strengthening in a dual-phase Al_(0.5)CoCrFeNi high-entropy alloy显示文摘Precipitation-hardening in fcc-based high-entro py alloys(HEAs)have usually been realized by introducing complex intermetallic compounds.In this study,enhanced strength is ascribed to the existence of L1_(2) precipitates and B2/bcc conjoint phases in the fcc matrix.The nano-size particles in the Al_(0.5)CoCrFeNi HEA are produced by cold-rolling,followed by intermediate-temperature-annealing at 650℃.For L1_(2) ordering,the initial granular structure has transformed into lamella structure and then kept stable when the holding time prolonged to 200 h.The formation of this conjoint B2/bcc driven by the concentration profiles takes place when the diffusion process of elements is sufficient after long-time aging.Based on the microstructure analysis,changes in mechanical properties are associated with the shape,size scale and volume fraction of the precipitates.The peak ultimate tensile stress reaches 1221.5 MPa,1.97 times compared with the as-cast alloy,remaining plasticity of 21.3%. | Haoxue Yang Jinshan Li Xiangyu Pan William Yi Wang Hongchao Kou Jun Wang | 2021 | Journal of Materials Science & Technology2021，，13： | 1 |
| 3 | Study on the theory and experiment of ring-type traveling wave ultrasonic motor显示文摘 | Yang Zhigang Ma Haoxue | 2002 | Proceeding of the CSEE2002，20，2： | 1 |
| 4 | Calculation and Test of Hitting Force of Firing Bullet on the Bulletproof Helmet显示文摘In this paper the hit force of firing bullet on bulletproof helmet has been computed and the test device has been described. The device is divided into two parts: 1) The bullet, helmet and mould are in one system, using moment theorem to calculate the hit force; 2) The mould, sensor and support pole are in one system, using the method in reference [1] that measures the dynamic strain and displacement of simulate target of bulletproof clothes. We compute the transfigure energy and momentum energy when hitting the mould, the work done by the sensor and the expend energy of support pole. We get the hit force of helmet using energy balance principle. The result is according with the test and has been used to design the GGK93T bulletproof helmet and other serial products. | Jinji, Guo Haoxu, Xing Gao, Yang Chengbai, Wu Jincai, Pei Zhijian, Liu | 1998 | Journal of Systems Engineering and Electronics1998，9，3： | 1 |
| 5 | Method for Evaluating Bolt Competitive Failure Life Under Composite Excitation显示文摘In this study,the competitive failure mechanism of bolt loosening and fatigue is elucidated via competitive failure tests on bolts under composite excitation.Based on the competitive failure mechanism,the mode prediction model and“load ratio-life prediction curve”(ξ-N curve)of the bolt competitive failure are established.Given the poor correlation of theξ-N curve,an evaluation model of the bolt competitive failure life is proposed based on Miner’s linear damage accumulation theory.Based on the force analysis of the thread surface and simulation of the bolt connection under composite excitation,a theoretical equation of the bolt competitive failure life is established to validate the model for evaluating the bolt competitive failure life.The results reveal that the proposed model can accurately predict the competitive failure life of bolts under composite excitation,and thereby,it can provide guidance to engineering applications. | Guangwu Yang Long Yang Han Zhao Haoxu Ding Bing Yang Shoune Xiao | 2023 | Chinese Journal of Mechanical Engineering2023，36，4： | 0 |
| 6 | Flexible Diodes/Transistors Based on Tunable p-n-Type Semiconductivity in Graphene/Mn-Co-Ni-O Nanocomposites显示文摘We report a novel Mn-Co-Ni-O(MCN)nanocomposite in which the p-type semiconductivity of Mn-Co-Ni-O can be manipulated by addition of graphene.With an increase of graphene content,the semiconductivity of the nanocomposite can be tuned from p-type through electrically neutral to n-type.The very low effective mass of electrons in graphene facilitates electron tunneling into the MCN,neutralizing holes in the MCN nanoparticles.XPS analysis shows that the multivalent manganese ions in the MCN nanoparticles are chemically reduced by the graphene electrons to lower-valent states.Unlike traditional semiconductor devices,electrons are excited from the filled graphite band into the empty band at the Dirac points from where they move freely in the graphene and tunnel into the MCN.The new composite film demonstrates inherent flexibility,high mobility,short carrier lifetime,and high carrier concentration.This work is useful not only in manufacturing flexible transistors,FETs,and thermosensitive and thermoelectric devices with unique properties but also in providing a new method for future development of 2D-based semiconductors. | Lihong Su Zhou Yang Xitong Wang Ziao Zou Bo Wang Gary Hodes Ninghui Chang Yongyong Suo Zhibo Ma Haoxu Wang Yucheng Liu Junping Zhang Shuanhu Wang Yuefei Li Fengxia Yang Jixin Zhu Fei Gao Wei Huang Shengzhong Liu | 2022 | Research2022，，1： | 0 |
| 7 | Whole-milk consumption decreases the risk of inflammatory bowel disease:a two-sample Mendelian rand omization analysis显示文摘Objective: The impact of dairy fat on inflammatory bowel disease remained inconclusive. We aimed to compare the effects of whole-milk and skimmed-milk consumption on the risk of inflammatory bowel disease using a Mendelian randomization analysis.Methods: We conducted a genome-wide association study of the preference for whole versus skimmed milk using data for 20,200 whole-milk consumers and 67,847 skimmed-milk consumers from the UK Biobank. The lead single nucleotide polymorphisms in the associated loci were identified at the genome-wide significance level, and were further employed as instrumental variables for whole-milk preference. We conducted a two-sample Mendelian randomization analysis with whole-milk preference as the exposure and inflammatory bowel disease as the outcome. The pleiotropic effects and heterogeneity of the instrumental variables were estimated using Mendelian randomization-Egger regression and CochranQ test, respectively. This study was conducted using the UKB resources under the application '53536' . The UK Biobank was approved by the North West Multi-center Research Ethics Committee, the National Information Governance Board for Health and Social Care in England and Wales, and the Community Health Index Advisory Group in Scotland.Results: The genome-wide association study identified five lead nucleotide polymorphisms associated with whole-milk preference. Mendelian randomization indicated that whole-milk preference significantly decreased the risk of inflammatory bowel disease (β=-1.735,P=0.048). Of the two subtypes, whole-milk preference was associated with a lower risk of Crohn disease (β=-2.549,P=0.032), but had no significant effect on the risk of ulcerative colitis (β=-1.002,P=0.44).Conclusion: Consumption of whole-milk fat may protect against Crohn disease, compared with skimmed milk. This conclusion was based on causal inference in a cohort study, and further validation in randomized controlled trials is warranted. | Jiuling Li Haoxue Zhu Aowen Tian Ying Guo Xiaoxuan Zhao Miaoran Zhang Lanlan Chen Jianping Wen Jianli Yang Baiyu Qi Peng Chen | 2021 | Journal of Bio-X Research2021，4，3： | 0 |
| 8 | Systematic analysis on expression quantitative trait loci identifies a novel regulatory variant in ring finger and WD repeat domain 3 associated with prognosis of pancreatic cancer显示文摘Background:Pancreatic adenocarcinoma(PAAD)is an extremely lethal malignancy.Identification of the functional genes and genetic variants related to PAAD prognosis is important and challenging.Previously identified prognostic genes from several expression profile analyses were inconsistent.The regulatory genetic variants that affect PAAD prognosis were largely unknown.Methods:Firstly,a meta-analysis was performed with seven published datasets to systematically explore the candidate prognostic genes for PAAD.Next,to identify the regulatory variants for those candidate genes,expression quantitative trait loci analysis was implemented with PAAD data resources from The Cancer Genome Atlas.Then,a two-stage association study in a total of 893 PAAD patients was conducted to interrogate the regulatory variants and find the prognostic locus.Finally,a series of biochemical experiments and phenotype assays were carried out to demonstrate the biological function of variation and genes in PAAD progression process.Results:A total of 128 genes were identified associated with the PAAD prognosis in the meta-analysis.Fourteen regulatory loci in 12 of the 128 genes were discovered,among which,only rs4887783,the functional variant in the promoter of Ring Finger and WD Repeat Domain 3(RFWD3),presented significant association with PAAD prognosis in both stages of the population study.Dualluciferase reporter and electrophoretic mobility shift assays demonstrated that rs4887783-G allele,which predicts the worse prognosis,enhanced the binding of transcript factor REST,thus elevating RFWD3 expression.Further phenotypic assays revealed that excess expression of RFWD3 promoted tumor cell migration without affecting their proliferation rate.RFWD3 was highly expressed in PAAD and might orchestrate the genes in the DNA repair process.Conclusions:RFWD3 and its regulatory variant are novel genetic factors for PAAD prognosis. | Ying Zhu Xiating Peng Xiaoyang Wang Pingting Ying Haoxue Wang Bin Li Yue Li Ming Zhang Yimin Cai Zequn Lu Siyuan Niu Nan Yang Rong Zhong Jianbo Tian Jiang Chang Xiaoping Miao | 2022 | Chinese Medical Journal2022，，11： | 0 |
| 9 | Parameters Calibration of the GISSMO Failure Model for SUS301L-MT显示文摘With the development of the rail transit industry,more attention has been paid to the passive safety of rail vehicles.Structural damage is one of the main failure behaviors in a rail vehicle collision,but it has been paid little attention to in past research.In this paper,the quasi-static fracture experiments of SUS301L-MT under different stress states were carried out.The mechanical fracture properties of this material were studied,and the corresponding finite element simulation accuracy was improved to guide the design of vehicle crashworthiness.Through the tests,the fracture behavior of materials with wide stress triaxiality was obtained,and each specimen’s fracture locations and fracture strains were determined.Parameters of a generalized incremental stress state dependent damage model(GISSMO)of the material were calibrated,and the model’s accuracy was verified with test results from a 45°shear specimen.The GISSMO failure model accurately reflected the fracture characteristics of the material.The mesh dependency of this model was modified and discussed.The results show that the simulation agrees well with experimental data for the force-displacement curve after correction,but the strain distribution needs to be further studied and improved. | Tao Zhu Haoxu Ding Chao Wang Yuxin Liu Shoune Xiao Guangwu Yang Bing Yang | 2023 | Chinese Journal of Mechanical Engineering2023，36，1： | 0 |
| 10 | Flexible Diodes/Transistors Based on Tunable p-n-Type Semiconductivity in Graphene/Mn-Co-Ni-O Nanocomposites显示文摘We report a novel Mn-Co-Ni-O(MCN)nanocomposite in which the p-type semiconductivity of Mn-Co-Ni-O can be manipulated by addition of graphene.With an increase of graphene content,the semiconductivity of the nanocomposite can be tuned from p-type through electrically neutral to n-type.The very low effective mass of electrons in graphene facilitates electron tunneling into the MCN,neutralizing holes in the MCN nanoparticles.XPS analysis shows that the multivalent manganese ions in the MCN nanoparticles are chemically reduced by the graphene electrons to lower-valent states.Unlike traditional semiconductor devices,electrons are excited from the filled graphite band into the empty band at the Dirac points from where they move freely in the graphene and tunnel into the MCN.The new composite film demonstrates inherent flexibility,high mobility,short carrier lifetime,and high carrier concentration.This work is useful not only in manufacturing flexible transistors,FETs,and thermosensitive and thermoelectric devices with unique properties but also in providing a new method for future development of 2D-based semiconductors. | Lihong Su Zhou Yang Xitong Wang Ziao Zou Bo Wang Gary Hodes Ninghui Chang Yongyong Suo Zhibo Ma Haoxu Wang Yucheng Liu Junping Zhang Shuanhu Wang Yuefei Li Fengxia Yang Jixin Zhu Fei Gao Wei Huang Shengzhong Liu | 2021 | Research2021，，1： | 0 |
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