选择310 k Hz作为YDT175型无线电波透视仪的工作频率,采取恰当的抗干扰方法,对准格尔煤田唐家会矿井61101首采工作面隐伏断层进行了探测试验,使用无线电波透视CT软件对采集数据进行反演处理与显示。结果在工作面回风巷770~1 370 m段发现...选择310 k Hz作为YDT175型无线电波透视仪的工作频率,采取恰当的抗干扰方法,对准格尔煤田唐家会矿井61101首采工作面隐伏断层进行了探测试验,使用无线电波透视CT软件对采集数据进行反演处理与显示。结果在工作面回风巷770~1 370 m段发现3处电磁波衰减带,解释为断层。经已有地质资料以及巷道实际揭露验证,这3处衰减带内的确存在3条正断层,说明选择适当的无线电波透视频率能够较可靠地探测工作面隐蔽地质异常体,无线电波透视法是保障矿井工作面安全高效生产的有效技术。展开更多
How to control the microstructure of titanium alloy bars is important to fabricating high-performance aerial forgings. This paper gives a thorough survey of the manufacturing meth- ods and microstructure control techn...How to control the microstructure of titanium alloy bars is important to fabricating high-performance aerial forgings. This paper gives a thorough survey of the manufacturing meth- ods and microstructure control techniques for titanium alloy bars. It summarizes the effects of pro- cessing parameters on the mechanisms and laws of microstructure evolution during βworking and （α ＋ β） working, including the kinetics and grains size of dynamic recrystallization （DRX） during deformation and the kinetics and grains size of spheroidization during （α ＋ β） deformation. The trends in microstructure control techniques are presented for fabricating titanium alloy bars with high efficiency, low cost, and high quality by means of β/（α ＋ β） working, and the puzzles and chal- lenges in the future are also pointed out.展开更多
文摘选择310 k Hz作为YDT175型无线电波透视仪的工作频率,采取恰当的抗干扰方法,对准格尔煤田唐家会矿井61101首采工作面隐伏断层进行了探测试验,使用无线电波透视CT软件对采集数据进行反演处理与显示。结果在工作面回风巷770~1 370 m段发现3处电磁波衰减带,解释为断层。经已有地质资料以及巷道实际揭露验证,这3处衰减带内的确存在3条正断层,说明选择适当的无线电波透视频率能够较可靠地探测工作面隐蔽地质异常体,无线电波透视法是保障矿井工作面安全高效生产的有效技术。
基金the National Natural Science Foundation of China(51175427,51275415)Open Fund of State Key Laboratory of Materials Processing and Die&Mould Technology of China(P2014-005)+1 种基金the EU Marie Curie Actions–Mat Pro Future Project of China(FP7-PEOPLE-2012-IRSES-318968)the‘‘111”Project of China(B08040)for their supports to this research
文摘How to control the microstructure of titanium alloy bars is important to fabricating high-performance aerial forgings. This paper gives a thorough survey of the manufacturing meth- ods and microstructure control techniques for titanium alloy bars. It summarizes the effects of pro- cessing parameters on the mechanisms and laws of microstructure evolution during βworking and （α ＋ β） working, including the kinetics and grains size of dynamic recrystallization （DRX） during deformation and the kinetics and grains size of spheroidization during （α ＋ β） deformation. The trends in microstructure control techniques are presented for fabricating titanium alloy bars with high efficiency, low cost, and high quality by means of β/（α ＋ β） working, and the puzzles and chal- lenges in the future are also pointed out.
