钴基合金显微硬度测量压痕尺寸效应分析
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摘要
采用Hanemann法和PMT-3硬度计探讨了不同热处理的钴基合金维氏显微硬度荷载的依赖性,利用Meyer定律、Hays-Kendall模型和Bull的弹塑性变形模型对试验数据进行了分析。结果表明,对于同一试样,在外加荷载下,利用Hanemann法测得的显微硬度有所下降,而PMT-3硬度测试表现出相反的现象。Meyer硬度指数n随所谓标准硬度常量A线性减小;在试验误差允许范围内,利用其它模型测得的与荷载无关的显微硬度是恒定的;引起硬度荷载依赖性的物理量与表示硬度荷载无关的常量成反比;引起硬度荷载依赖性的物理量与Meyer硬度指数n有关。
The dependence of the microhardness load of cobalt base alloy with different heat treatment was discussed with Hanemann method and PMT-3 hardness meter, the experimental data were analyzed using Meyer's law, Hays-Kendall model and Bull's elastic-plastic deformation model. The results show that for the same sample, the microhardness measured by Hanemann method is reduced under the applied load, and the PMT-3 hardness test show the opposite phenomenon. The Meyer hardness index n decreases linearly with the so-called standard hardness constant A. In the allowable range of test error, the microhardness of the load independent of the other model is constant. The physical quantity that causes the hardness load dependence is inversely proportional to the invariant of the hardness load. The physical quantity that causes hardness load dependence is related to Meyer hardness index n.
The dependence of the microhardness load of cobalt base alloy with different heat treatment was discussed with Hanemann method and PMT-3 hardness meter, the experimental data were analyzed using Meyer's law, Hays-Kendall model and Bull's elastic-plastic deformation model. The results show that for the same sample, the microhardness measured by Hanemann method is reduced under the applied load, and the PMT-3 hardness test show the opposite phenomenon. The Meyer hardness index n decreases linearly with the so-called standard hardness constant A. In the allowable range of test error, the microhardness of the load independent of the other model is constant. The physical quantity that causes the hardness load dependence is inversely proportional to the invariant of the hardness load. The physical quantity that causes hardness load dependence is related to Meyer hardness index n.
引文
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[3]郭艳丽,王香耿,姚泽坤,等.FGH4096-GH4133B双合金高温变形的本构关系[J].铸造技术,2017,38(06):1278-1282.
[4]王忠堂,邓永刚,张士宏.基于加工硬化率的高温合金Inconel690动态再结晶临界条件[J].材料热处理学报,2014,35(7):193-197.
[5]Stephan A Brinckmann,Mareike Frensemeier,Christopher M Laursen,et al.Effect of indentation temperature on nickel-titanium indentation-induced two-way shape-memory surfaces[J].Materials Science and Engineering:A,2016,675:253-261.
[6]周亮,姚英学.纳米压痕硬度尺寸效应分析及其试验研究[J].机械工程学报,2006,(S1):84-88.
[7]R.Sánchez-Martín,M.T.Pérez-Prado,J.Segurado,et al.Effect of indentation size on the nucleation and propagation of tensile twinning in pure magnesium[J].Acta Materialia,2015,93:114-128.
[8]向勇,任杰,白满社,等.Li2O-Al2O3-Si O2微晶玻璃超光滑表面纳米硬度实验研究[J].纳米技术与精密工程,2014,12(02):147-150.
[9]周剑秋,黄连军,王英.基于应变梯度位错理论的纳晶-无定形态层状复合材料的力学性能研究[J].工程力学,2014,31(01):224-228.
[10]王清江,刘建荣,杨锐.高温钛合金的现状与前景[J].航空材料学报,2014,34(04):1-26.
[11]刘婉颖,林元华,陈宇海,等.不同热处理工艺对Ti6Al4V钛合金微观结构和力学性能影响(英文)[J].稀有金属材料与工程,2017,46(03):634-639.
[12]Jun Cai,Fuguo Li,Taiying Liu,et al.Microindentation study of Ti-6Al-4V alloy[J].Materials&Design,2011,32(5):2256-2762.
[13]Danial Faghihi,George Z.Voyiadjis.Determination of nanoindentation size effects and variable material intrinsic length scale for body-centered cubic metals[J].Mechanics of Materials,2012,44:189-211.
[14]Mingjie Zhang,Fuguo Li,Zhanwei Yuan,et al.Effect of heat treatment on the micro-indentation behavior of powder metallurgy nickel based superalloy FGH96[J].Materials&Design,2013,49:705-715.
[15]CHENG W L,PARK S S,TANG W N,et al.Influence of alloying elements on microstructure and microhardness of Mg-Sn-Zn-based alloys[J].Transactions of Nonferrous Metals Society of China,2010,20(12):2246-2252.
[16]Xinkai Ma,Fuguo Li,Chen Zhao,et al.Indenter load effects on creep deformation behavior for Ti-10V-2Fe-3Al alloy at room temperature[J].Journal of Alloys and Compounds,2017,709:322-328.
[17]衣玉兰.坡口尺寸对激光熔覆镍基合金微观组织与力学性能的影响[J].铸造技术,2015,36(12):2892-2894.
[18]孟兆强,郭中一,龚江宏.石英陶瓷弯曲强度的Weibull统计分析[J].稀有金属材料与工程,2009,38(S2):1178-1180.