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【期刊论文】Development of an advanced ceramic tool material-functionallygradient cutting ceramics
艾兴, Ai Xing*, Zhao Jun, Huang Chuanzhen, Zhang Jianhua
Materials Science and Engineering A248(1998)125-131,-0001,():
-1年11月30日
A model for designing functionally gradient ceramic tool materials with symmetrical distribulion is presented for the first time.fiased on the analysis of slress distribution for ceramic tools in the cutting process, the design of composition dlstrifiution was carried out with the aim of partial relaxation of stresses resuhing from external Ioadings by residual thermal stress in fabricaring process by means of finite element analysis of residual thermal stress for gradient ceramic tool malerials wilh differentcomposirional distributions. The principle for oprimal design was also proposed. An Al2O3/TiC funclionally grodlent ceramic toolmaterial. FG-I. was accordingly synlhesized by hot pressing.
Al2O3/, TiC, Ceramic iool malerials, Composilional diszribulion, Functionally gradient materials, Materials design
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【期刊论文】SiC晶须对Al2O3/TiB2/SiCw陶瓷刀具材料高温断裂韧性的影响
艾兴, 邓建新, 李兆前
硅酸盐学报,1996,24(1):85~89,-0001,():
-1年11月30日
研究了不同SiC晶须音量的Al2O3/TiB2/SiCw陶瓷刀具材料的断裂韧性随温度的变化规律。结果表明:Al2O3/TiB2/SiCw陶瓷材料的K1e在1000℃内随温度的升高而增大;晶须含量越高,K1e增幅越大。通过计算分析表明:随温度的升高断裂时拔出的晶须大大增多。当晶须体积含量(下同)为20%时,Al2O3/TiB2/SiCw陶瓷在室温时只有长径比小于2.87的晶须在断裂时才有可能产生拔出,而在900℃时长径比小于10的晶须都能产生拔出。在同样温度条件下,晶须含量越高所能产生拔出的晶须增多。当晶须含量为40%时(晶须长径比为10),在温度大于620℃时能产生晶须的拔出,而当晶须含量为18%时, 只有温度大于940℃才能产生拔出。晶须含量越高其高温增韧效果越强。
碳化硅晶须,, 复合材料,, 陶瓷刀具,, 高温增韧
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【期刊论文】STUDY ON THE CRITERION FOR CERAMIC TOOL FRACTURE ININTERMITTENT STEEL TURNING
艾兴, Ai Xing, Xia Chuanbo
CHINESE JOURNAL OF MECHANICAL ENGINEERING, 1990 3 (1): 1~8,-0001,():
-1年11月30日
A new criterion of fracture mechanics-stochastic characteristics for ceramic tool fracture based on the analysis of its fracture features in intermittent turning, is proposed in the paper. A series of experiments on mechanical performance for ceramic tool as well as cutting tests on tool life by fracture have been done. The stresses in tool tip are analysed by finite element method Allof these show that the modified distribution function of theoretical tool life by fracture derived from the mentioned new criterion presents a good agreement with the experimental results, SEM analysis on the tool fracture faces indicates the late fracture of ceramic tool appears in fatigue features
Ceramic tool Criterion of fracture Fracture mechanics Fracture mechanism Tool life by fracture
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【期刊论文】STUDY ON TEE CRITERION FOR CEHENTED CARBIDE TOOL FRACTURR AT ELEVATED TEMPERATURE*
艾兴, Ai Xing, Mu Jianqiang
TRANSFORMATION OF SCIBNCB AND TBCHNOLOGY INTO PRODUCTIV B POWBR Proceedinge of the 11th International Conference on Production research (ICPR), 1991,-0001,():
-1年11月30日
A new criterion of fracture mechanics-stochastic characteristics for cemented carbide tool fracture in consideration of cutting temperature effect is proposed in the paper. Experimental results show that the theoretical tool life by fracture obtained from the criterion proposed for tool fracture presents a good agreement with the experimental one.
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艾兴
中国工程科学,2000,2(11):40~51,-0001,():
-1年11月30日
在机械加工领域,切削加工是应用最广泛的一种加工方法,其发展方向主要是研究高速切削,对超硬材料加工,主要是发展磨削、超声和放电等高效复合加工技术。文章介绍高效切削加工和高效复台加工技术的理论研究和技术开发与应用及所取得的重要成果,主要包括高建切削基础理论、陶瓷刀具材科研究新体系和超硬材料断续磨、超声和电火花的复台加工理论与技术的研究开发。生产实际应用结果表明,高效加工技术可以大幅度提高加工技率。改善加工表面质量,降低加工成本。
高效加工技术, 高速切削, 陶瓷刀具材料, 断续磨-间隙脉冲放电复合加工, 超声-间隙脉冲放电复合加工
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