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measurement of grain size and the corrected identification of interfaces and length are very important topics in materials science because they are the representation and validation of mathematical models...Algorithm for repairing the damaged images of grain structures obtained from the cellular automata and measurement of grain sizeA.Ramírez-López1,2,3,S.López-Ramírez3,C.Duran-Valencia31. Department......
Predicting recrystallized grain size in friction stir processed 304L stainless steelM.P.Miles1,T.W.Nelson1,C.Gunter1,F.C.Liu1,L.Fourment2,T.Mathis11. Manufacturing Engineering Department,Brigham... was developed to predict temperatures and recrystallized grain size in the stir zone. The model employed an Eulerian finite element approach,where flow stresses for a large range of strain rates......
Trans. Nonferrous Met. Soc. China 28(2018) 2102-2106 Grain size based low cycle fatigue life prediction model for nickel-based superalloy Peng ZHANG1, Qiang ZHU1, Gang CHEN1, He-yong QIN2, Chuan-jie... life prediction of nickel-based superalloys is of great importance for their reliable practical application. To investigate the effects of total strain and grain size on LCF behavior, the high......
), and liquid peak parameter (LPP) which is firstly introduced into magnesium alloys. The resultant grain size decreases with increasing nucleation temperature (θn) and decreasing values of Δθrec, trec and LPP... sample for grain size measurement was taken solid solution treatment at 420 ℃ for 2 h and then quenched in water. The grain size of each cone sample was measured from the central region of a polished......
Effects of Sb Content on Solidification Pathways and Grain Size of AZ91 Magnesium AlloyDan-Hui Hou1,2,Song-Mao Liang3,Rong-Shi Chen2,Chuang Dong1,En-Hou Han21. School of Material Science.... The grain size of the alloys with different Sb contents was quantitatively determined by electron backscattered diffraction technique which shows no grain refinement in Sb-containing AZ91 alloy......
Effect of Al and Zn additives on grain size of Mg-3Ni-2MnO2 alloy FANG Wa(房 娃), SUN Hong-fei(孙宏飞), FANG Wen-bin(房文斌), WANG Bin(王 彬) School of Materials Science and Engineering, Harbin...; Abstract: The effect of Al and Zn additives on the grain size of Mg-3Ni-2MnO2 alloy was investigated. The nanostructured......
罩式退火炉退火温度对Q235冷轧板组织与性能的影响何方1,刘清友2,孙新军2,项金钟0(1.云南省昆明市云南大学物理科学与技术学院2.钢铁研究总院 结构所,北京 100081)摘 要:主要通过实验室模拟工业罩式退火工艺,研究不同退火温度对Q235冷轧板的组织与性能的影响.通过光学显微镜观察不同退火温度下铁素体的晶粒长大情况,结果显示:晶粒尺寸随退火温度升高而增加,当退火温度在600~640℃时,横向尺寸长大较缓慢.通过透射电镜观察析出物的形貌并进行物相分析,知析出物为渗碳体.统计析出物在不同退火温度下的尺寸和分......
deviation (ω). Eventually, a response surface of average grain size to holding temperature and holding time is constructed based on the data expanded by the solved BP-ANN model, and the grain growth behaviors are described. Key words: grain growth model; BP artificial neural network; Sellars model; average grain size 1 Introduction In the hot deformation processes of nickel- based alloys, grain growth......
晶粒尺寸对冷轧退火纯Cu晶界特征分布的影响蔡正旭1,王卫国1,方晓英1,郭红2(1.山东省淄博市山东理工大学机械工程学院2.山东理工大学 分析测试中心)摘 要:采用电子背散射衍射(EBSD)技术研究了晶粒尺寸不同的纯Cu试样经冷轧变形和高温退火后的晶界特征分布(GBCD).结果表明,细晶(约12μm)试样经小变形冷轧后在高温短时退火过程中形成了比例高达75.7%的∑3n(n=1,2,3)特殊晶界,而且具有∑3n(n=1,2,3)取向关系的特殊晶粒团的平均尺寸较大,达到200μm,试样的GBCD得到较好优化;随着......
Grain Size Effect on the Martensite Formation in a High-Manganese TWIP Steel by the Rietveld MethodG. Dini1,A. Najafizadeh1,S.M. Monir-Vaghefi1,R. Ueji21. Department of Materials Engineering,Isfahan... the effect of austenite grain size (AGS) on the martensite formation in a high-manganese twinning-induced plasticity (TWIP) steel. The results of a quantitative microstructural characterization......
