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		题名	作者	年代	出处	被引量
	1	镍基单晶高温合金缩松缺陷研究显示文摘采用选晶法在改进型Bridgman定向凝固炉上制备镍基单晶高温合金DD403和DD407,研究不同合金缩松含量以及凝固参数对缩松的影响。结果表明,抽拉速率V=100μm/s时,DD403和DD407缩松含量分别为:0.034vol%和0.014 vol%;随抽拉速率增加,DD403中缩松含量呈先减少后增加的趋势。	高斯峰肖俊峰南晴唐文书张炯李永君	2016	热加工工艺2016，45，19：	5
	2	Influences of processing parameters on microstructure during investment casting of nickel-base single crystal superalloy DD3显示文摘The effects of solidification variables on the as-cast microstructures of nickel-base single crystal superalloy DD3 have been investigated by using the modified Bridgman apparatus.The experiments were performed under a thermal gradient of approximately 45 K·cm-1 and at withdrawal rates ranging from 30 to 200 m·s-1.The experimental results show that the primary and secondary dendritic arm spacings(PDAS and SDAS) decrease when the withdrawal rate is increased.Compared with the theoretical models of PDAS,the results are in good agreement with Trivedi's model.The relationships of PDAS and SDAS with withdrawal rates can be described as ? 1 =649.7V -0.24±0.02 and? 2 =281V -0.32±0.03 ,respectively.In addition,the size of theγ′phase significantly decreases with increasing withdrawal rate.	Gao Sifeng Liu Lin Xu Yiku Yang Chubin Zhang Jun Fu Hengzhi	2012	China Foundry2012，9，2：	4
	3	Simulation of stray grain formation at the platform during Ni-base single crystal superalloy DD403 casting显示文摘The mechanism of stray grain formation at the platform of turbine blade simulator and the effect of withdrawal rate(V) on the stray grain phenomenon have been investigated using a macro-scale Pro CAST coupled with a 3D Cellular Automaton Finite Element(CAFE) model. The results indicate that the stray grains nucleate at the edges of platform at V =150 μm·s^(-1) and 200 μm·s^(-1). Using Pro CAST computer simulation software, it was proven that the stray grain formation is signifi cantly dependent on the undercooling and the temperature fi eld distribution in the platform. The macroscopic curvature of the liquidus isotherm becomes markedly concave with an increase in the withdrawal rate. The probability of stray grain formation at the edges of platform can be increased by increasing the withdrawal rate in the range of 70 μm·s^(-1) to 200 μm·s^(-1).	Si-feng Gao Lin Liu Jun Zhang Jun-feng Xiao Wen-shu Tang Yong-jun Li Qing Nan	2015	China Foundry2015，12，2：	3

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