维普期刊资源整合服务平台（V6.5）

维普中文期刊产品整合服务

1篇 您的检索式：作者名="Ge Bingming"

选中清除导出查看参考文献查看引证文献引用追踪共1页首页上一页第1页下一页末页 /1 跳转

		题名	作者	年代	出处	被引量
	1	Microstructural evolution of directionally solidified DZ125 superalloy castings with different solidification methods显示文摘The properties of Ni-base superalloy castings are closely related to the uniformity of their as-cast microstructure,and different solidification methods have serious effect on microstructural uniformity.In this paper,the influences of high rate solidification(HRS) process(with or without superheating) and liquid metal cooling(LMC) process on the microstructure of DZ125 superalloy were investigated.Blade-shape castings were solidified at rates of 40 μm·s-1 to 110 μm·s-1 using HRS process and a comparative experiment was carried out at a rate of 70 μm·s-1 by LMC process.The optical microscope(OM),scanning electron microscope(SEM) were used to observe the microstructure and the grain size was analyzed using electron back scattered diffraction(EBSD) technique.Results show that for the castings by either HRS or LMC process,the primary dendrite arm spacing and size of γ' precipitates decrease with increasing the withdrawal rate;the dendrites and γ' precipitates at the upper section of the blade are coarser than those in the middle,especially for the HRS castings without high superheating technique.When the withdrawal rate is 70 μm·s-1,the castings by HRS with high superheating technique have the smallest PDAS with fine γ' precipitates;while the size distribution of γ' precipitates is more homogenous in LMC castings,and the number of larger grains in LMC castings is smaller than that in the HRS castings.Moreover,high superheating technique yields smaller grains in the castings.Both the LMC method and HRS with high superheating technique can be used to prepare castings with reduced maximum grain size.	Ge Bingming Liu Lin Zhang Jun Li Yafeng Fu Hengzhi Liu Xiaofu	2013	China Foundry2013，10，1：	0

返回顶部每页显示：

共1页首页上一页第1页下一页末页 /1 跳转

goolge学术搜索-维普

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1　渝公网安备 50019002500403号　违法和不良信息举报中心

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费