Α-TI

作品数：61被引量：105H指数：4
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相关领域：金属学及工艺一般工业技术更多>>
相关作者：褚武扬赖祖涵吕宏高克玮徐芳更多>>
相关机构：北京科技大学中国科学院金属研究所西安交通大学河南大学更多>>
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Achieving high strength-ductility synergy in TiBw/nearα-Ti composites by ultrafine grains and nanosilicides via low-temperature severe plastic deformation
《Journal of Materials Science & Technology》2024年第35期253-266,共14页Changjiang Zhang Xiaojian Liang Yonggang Sun Shuzhi Zhang Ruipeng Guo Hong Feng Fantao Kong Peng Cao 
supported by the National Natural Science Foundation of China(Nos.52171122,52371117,52271118 and 52071228);the Central Government Guides the Special Fund Projects of Local Scientific and Technological Development(No.YDZJSX2021A016);the Natural Science Foundation of Shanxi Province(No.20210302124077).
The common problem of low strength-ductility matching prevails in near-αhigh-temperature titanium matrix composites(TMCs).In this work,the design strategy of ultrafine grains and dispersed(Ti,Zr)6 Si3 nanoprecipitate...
关键词：Titanium matrix composites High temperature titanium alloy Severe plastic deformation Ultrafine grain SILICIDES Strengthening mechanisms 
金属钛辐照级联过程缺陷演化的分子动力学模拟被引量：1
《原子能科学技术》2024年第7期1523-1531,共9页周岁茹 应红 任翠兰 尹宗军 温阿利 海雪 施海宁 黄鹤飞 章文峰 
国家自然科学基金(52001322);上海市自然科学基金(23ZR1475700);四川省科技计划(2022YFSY0040)。
钛合金材料因其优异的耐腐蚀性能和机械性能被认为是反应堆的候选结构材料。本文围绕材料服役过程中的辐照损伤机制问题,采用分子动力学(MD)方法研究了金属钛(以α-Ti为例)的辐照级联过程,获得了不同温度(300、500、700和900 K)、不同能...
关键词：Α-TI 辐照缺陷 级联碰撞 初级辐照损伤 分子动力学 
Insights into the microstructural design of high-performance Ti alloys for laser powder bed fusion by tailoring columnar prior-βgrains andα-Ti morphology
《Journal of Materials Science & Technology》2024年第20期156-168,共13页S.X.Wang S.F.Li X.M.Gan R.D.K.Misra R.Zheng K.Kondoh Y.F.Yang 
This work was supported by the National Natural Science Foun-dation of China(Nos.52074254,51874271,and 52174349);the Key Projects of International Cooperation(No.122111KYSB20200034);the Project of Key Laboratory of Science and Technology on Par-ticle Materials(No.CXJJ-22S043);the CAS Project for Young Scientists in Basic Research(No.YSBR-025);This work was finan-cially supported by the Selection of Best Candidates to Undertake Key Research Projects(No.211110230200);This research work was also financially supported by the OU Master Plan Implementation Project promoted under Osaka University.
A high-performance Ti-Ni-B alloy with good tensile properties and reduced mechanical anisotropy was developed by promoting the columnar to equiaxed transition(CET)of prior-βgrains and modifyingα-laths to equiaxed gr...
关键词：Laser powder bed fusion Titanium alloys Grain refinement Powder processing Anisotropy 
Fatigue Crack Initiation and Propagation Dominated by Crystallographic Factors in TiB/near α-Ti Composite
《Acta Metallurgica Sinica(English Letters)》2024年第5期763-776,共14页Fanchao Meng Rui Zhang Shuai Wang Fengbo Sun Run Chen Lujun Huang Lin Geng 
financially supported by the National Key R&D Program of China(No.2021YFB3701203);the National Natural Science Foundation of China(NSFC,Grant Nos.52171137,52261135543 and U22A20113);the Heilongjiang Provincial Natural Science Foundation of China(Grant No.TD2020E001).
Discontinuously reinforced titanium matrix composites(DRTMCs)with a network structure have been extensively researched due to their superior combination of strength and ductility.However,their fatigue performance has ...
关键词：Titanium matrix composite TiBw Fatigue lifetime variability Crack initiation Crack propagation 
含氧纳米多晶α-Ti拉伸力学性能与变形机制的分子动力学模拟
《金属学报》2024年第2期220-230,共11页任军强 邵珊 王启 卢学峰 薛红涛 汤富领 
国家重点研发计划项目No.2017YFA0700701;国家自然科学基金项目Nos.52061025和51701189;西安交通大学金属材料强度国家重点实验室开放研究项目No.20192104;甘肃省教育厅“双一流”科研重点项目No.GSSYLXM-03。
纳米纯Ti对间隙O原子具有强烈的敏感性,O含量可以很大程度上改变其力学性能和变形机制。采用分子动力学方法分别研究了O含量、变形温度、应变速率对纳米多晶α-Ti拉伸性能及变形机制的影响。结果表明,纳米多晶α-Ti的屈服应力随间隙O含...
关键词：纳米多晶α-Ti 分子动力学 位错 晶界迁移 
Finite-temperature screw dislocation core structures and dynamics in α-titanium
《npj Computational Materials》2023年第1期12-24,共13页Anwen Liu Tongqi Wen Jian Han David J.Srolovitz 
A multiscale approach based on molecular dynamics(MD)and kinetic Monte Carlo(kMC)methods is developed to simulate the dynamics of an(a)screw dislocation inα-Ti.The free energy barriers for the core dissociation trans...
关键词：DISLOCATION DYNAMICS LOCKING 
Tensile properties and deformation behavior of an extra-low interstitial fine-grained powder metallurgy near alpha titanium alloy by recycling coarse pre-alloyed powder
《Journal of Materials Science & Technology》2022年第34期96-107,共12页H.R.Zhang H.Z.Niu M.C.Zang Y.H.Zhang S.Liu D.L.Zhang 
financially supported by the“Xing Liao Talent Plan”of Liaoning Province,China(No.XLYC1802080);the Fundamental Research Fund for the Central Universities(No.02080022117003)。
An extra-low interstitial near alpha alloy Ti-3Al-2Zr-2Mo(wt%) was fabricated by hydrogenation and thermomechanical consolidation(TMC) of the coarse and spherical pre-alloyed powder with particle sizes of 60 to 270 μ...
关键词：Nearα-Ti alloy Coarse pre-alloyed powder Hydrogenation Tensile properties Deformation behaviour 
Changes of alloying elements on elasticity and solid solution strengthening ofα-Ti alloys:a comprehensive high-throughput first-principles calculations被引量：6
《Rare Metals》2022年第8期2719-2731,共13页Tao Liu Xiao-Yu Chong Wei Yu Yun-Xuan Zhou Hai-Guang Huang Rong-Feng Zhou Jing Feng 
financially supported by the Rare and Precious Metals Material Genetic Engineering Project of Yunnan Province (No.202002AB080001-3);the National Natural Science Foundation of China (No.52001150)
Herein,the effects of 33 alloying elements on the elastic properties and solid solution strengthening(SSS)of a-Ti alloys were systematically studied via first-principles calculations based on a dilute solid solution.A...
关键词：Thermodynamics First-principles calculations Mechanical properties Titanium alloys Electronic structure 
基于第一性原理的涂层WC/α-Ti界面结合能、稳定性及电子结构的研究被引量：1
《热加工工艺》2021年第10期75-80,85,共7页候逸群 张锁怀 徐少丽 丁鑫 
国家自然科学基金资助项目(51475311)。
运用基于密度泛函理论的第一性原理方法,对WC/α-Ti界面性能进行了研究。研究内容包括:界面结合能、界面稳定性、界面电子结构及界面结合机制。结果表明:WC(001)与α-Ti(001)各自拥有较小的表面能,且两者之间错配度较小,γ角也互相一致...
关键词：WC/α-Ti界面 界面结合能 第一性原理 
拉伸载荷下α-Ti孔洞生长的机制研究
《稀有金属材料与工程》2021年第1期116-122,共7页李俊烨 宋俊成 臧翔 赵伟宏 张心明 颜文段 
National Natural Science Foundation of China(51206011,U1937201);Science and Technology Development Program of Jilin Province(20170204064GX);Project of Education Department of Jilin Province(JJKH20190541KJ);Science and Technology Program of Changchun City(18DY017)。
利用分子动力学方法,对含有预置微裂纹α-Ti模型施加不同方向拉伸载荷,通过观察模型内孔洞及位错的变化情况,揭示了孔洞生长的机制与初始缺陷对材料吸收能量在不同划分区域的规律。研究发现:当拉伸载荷沿着垂直于密排面的[0001]方向时,...
关键词：Α-TI 孔洞生长 晶体取向 位错 分子动力学 
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