夹杂物与空洞相互干涉对刃型位错运动吸附特性的影响 |
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引用本文: | 任杰,买买提明艾尼,阿布都热合曼·阿布都卡地尔. 夹杂物与空洞相互干涉对刃型位错运动吸附特性的影响[J]. 新疆大学学报(理工版), 2014, 0(2): 248-252 |
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作者姓名: | 任杰 买买提明艾尼 阿布都热合曼·阿布都卡地尔 |
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作者单位: | [1]新疆大学机械工程学院,新疆乌鲁木齐830008 [2]喀什地区公安局,新疆喀什844000 |
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基金项目: | 国家重点基础研究发展计划973项目(2011CB706600);国家自然科学基金面上资助项目(11072209) |
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摘 要: | 分子动力学(MD)计算模拟是研究复杂的微观系统的有力工具,使用Osetsky模型[1]和Malerba势能[2]进行模拟可以得到更为准确的数据。国内已经模拟过BCC铁中单独存在沉淀[3]和单独存在空洞[4]时的临界切应力(CRSS)在不同条件下的变化情况。本文模拟了BCC铁中刃型位错与铜沉淀和空洞共同存在时的相互作用过程,分析沉淀和空洞共同存在时对吸附切应力的影响,可以对位错的汇集过程更清楚的表征,同时预防或延迟裂纹的产生。
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关 键 词: | 刃型位错 空洞 铜沉淀 |
Inclusions and Voids Mutual Interference Effects on Edge Dislocation Motion Adsorption Characteristics |
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Affiliation: | REN Jie, Mamtimin Geni, Abdurahman Abdukadir (1. School of Mechanical Engineering, Xinjiang University, Urumqi, Xinjiang 830008, China; 2. Kashi Prefecture Public Security Bureau, Kashi, Xinjiang 844000, China) |
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Abstract: | Molecular dynamics (MD) simulation is a powerful tool for research on complex micro system, using Osetsky model [1] and Malerba potential energy[2] to simulate can get more accurate data. It has been simulated that when the presence of only copper precipitates[3] or voids[4] in the BCC iron, how the critical shear stress (CRSS) changes under different conditions inland . Simulated the interaction processes of edge dislocations with copper precipitation and holes co-exist in the BCC iron, and analyzed the influences to adsorption shear stress when copper precipitation and holes co-exist, the simulation can state the gathering processes of dislocations more clearly, prevent or delay the generation of cracks. |
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Keywords: | MD MD Edge dislocation Void Copper precipitation |
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