Li2O-Al2O3-SiO2微晶玻璃加工脆延转变临界条件实验研究

向勇, 陈静, 白满社, 任杰, 张晋宽

向勇, 陈静, 白满社, 任杰, 张晋宽. Li2O-Al2O3-SiO2微晶玻璃加工脆延转变临界条件实验研究[J]. 应用光学, 2014, 35(3): 500-504.
引用本文: 向勇, 陈静, 白满社, 任杰, 张晋宽. Li2O-Al2O3-SiO2微晶玻璃加工脆延转变临界条件实验研究[J]. 应用光学, 2014, 35(3): 500-504.
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XIANG Yong, CHEN Jing, BAI Man-she, REN Jie, ZHANG Jin-kuan. Experimental study of brittle-ductile translation critical condition in Li2O-Al2O3-SiO2 glass-ceramic machining[J]. Journal of Applied Optics, 2014, 35(3): 500-504.
Citation: XIANG Yong, CHEN Jing, BAI Man-she, REN Jie, ZHANG Jin-kuan. Experimental study of brittle-ductile translation critical condition in Li2O-Al2O3-SiO2 glass-ceramic machining[J]. Journal of Applied Optics, 2014, 35(3): 500-504.
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Li2O-Al2O3-SiO2微晶玻璃加工脆延转变临界条件实验研究

  • 飞行自动控制研究所,陕西 西安 710065

详细信息
    通讯作者:

    向勇（1988-）男，侗族，贵州铜仁人，硕士研究生，主要从事光学超精密加工技术研究。 Email:583002725@qq.com

  • 中图分类号: TN304;TH14

Experimental study of brittle-ductile translation critical condition in Li2O-Al2O3-SiO2 glass-ceramic machining

  • Flight Automatic Control Research Institute,Xi-an 710065,China

摘要

    摘要
  • 摘要: 介绍了Li2O-Al2O3-SiO2微晶玻璃的加工特点。基于纳米划痕技术对Li2O-Al2O3-SiO2微晶玻璃进行了纳米划痕实验，测得微晶玻璃材料脆延转变临界切削深度和临界载荷的平均值分别为125.6 nm和29.78 mN。将实验所得临界切削深度值与基于压痕断裂力学模型建立的脆延转变临界切削深度计算值进行了对比，结果表明，T. G. Bifano基于显微压痕法给出的临界切削深度计算值与实验结果差别较大，结合实验结果对其公式进行了修正；基于压痕断裂力学模型建立的延性域磨削临界切削深度计算值与实验结果相差较小，并分析了产生差异的原因。
    Abstract: The features of glass-ceramic processing in the Li2O-Al2O3-SiO2 system were introduced. The nano-scratch experiment on glass-ceramic in the Li2O-Al2O3-SiO2 system was performed based on nano-scratch technique,and the mean tested values of brittleness-ductility transition critical-depth-of-cut and critical load of glass-ceramic were 125.6 nm and 29.78 mN, respectively. The tested value of critical-depth-of-cut was compared with the calculated value according to the critical condition of brittleness-ductility transition based on indentation fracture mechanics. It was showed that the difference between the calculated value of critical-depth-of-cut given by T. G. Bifano based on micro-indentation and the experimental value was remarkable, thus, the model was corrected in accordance with experimental value; There was no obvious difference between the value of critical-depth-of-cut obtained from experiments and the calculation value of ductile-regime grinding critical condition based on indentation fracture mechanics. In addition, reasons for the difference were also discussed in this paper.
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  • 刊出日期:  2014-05-14

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