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phase-field; antisite defect 1 Introduction Extensive studies on the site occupation behavior (including both the site preference of ternary substitution elements and antisites of the constituent.... References [1] PRINS S, ARROYAVE R, LIU Z K. Defect structures and ternary lattice site preference of the B2 phase in the Al-Ni-Ru system [J]. Acta Materialia, 2007, 55: 4781-4787. [2] JIANG C. Site......
-site defect Foundation item: Projects(U1610123, 51674226, 51574207, 51574206, 51274175) supported by the National Natural Science Foundation of China; Project(2014DFA50320) supported by International......
Trans. Nonferrous Met. Soc. China 22(2012) 2762-2770 Atomistic simulation of thermal effects and defect structures during nanomachining of copper GUO Yong-bo, LIANG Ying-chun School of Mechatronics.... Centrosymmetry parameter method was used to monitor defect structures. Dislocations and vacancies are the two principal types of defect structures. Residual defect structures impose a major change......
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温度对DO22结构Ni3V反位缺陷影响的微观相场法模拟张静1,陈铮1,王永欣1,卢艳丽1,苗海川1(1.陕西省西安市西北工业大学 材料学院)摘 要:运用微观相场法研究温度对DO22结构反位缺陷的影响.结果显示,无论是α亚晶格上的反位缺陷VNi和AlNi还是β亚晶格上的NiV和AlV,其值均随温度升高而升高.β亚晶格上的反位缺陷NiV随温度升高而升高的速率和幅度最大,并且无论是在低温还是高温下其值均大于其他类型的反位缺陷值.Al原子在α亚晶格的占位几率高于在β亚晶格的占位几率,Al优先占据α亚晶格.......
多级图像分类系统在硅钢冷轧表面缺陷检测中的应用甘胜丰1,孙林1,曹阳2,刘广益2(1.湖北省武汉市地质大学机械与电子信息工程学院2.武汉钢铁(集团)公司)摘 要:针对硅钢冷轧生产过程中带钢表面缺陷的特点,采用一种基于专家经验和决策树分类器的多级带钢表面缺陷图像分类系统,包含训练集与测试集的采集,特征提取,专家经验训练分类器,决策树分类器等.实际应用表明,该系统能较好地识别结疤,重皮,孔洞和边裂等严重缺陷图像,提高了武钢硅钢冷轧生产过程的自动化水平.关键词:冷轧硅钢带钢； 表面缺陷检测； 图像分类；......
deep cups are drawn successfully. Key words: 5A06 aluminum alloy; plate; warm reverse deep drawing; forming defect 1 Introduction In order to improve the fuel efficiency and reduce the emissions..., and it was not much affected by the water flow of 7-21 mL/s [8]. The effects of blank holding force, punch speed and lubrication on the defect of the warm deep drawing were also investigated. Inadequate......
rotation speed (300-700 r/min) led to a decrease in the defect area (from 10.5 mm2 to zero), whereas the defect area demonstrated the opposite trend (increased to 1.5 mm2 from zero) upon further increasing... order: R300 Key words: Al-Mg2Si alloy; friction stir processing; ultimate tensile strength; microstructural evolution; defect 1 Introduction As the only stable intermetallic compound in the Mg-Si......
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