检索结果-南通市图书馆

检索条件"主题词=direction solidification"

共 1 条记录，以下是1-10 订阅

全选清除本页清除全部题录导出标记到"检索档案"

详细简洁

排序：

Effect of Heattreatment on directionally Solidified NB Containing Tlalallys

Effect of Heattreatment on Directionally Solidified NB Conta...

引用

作者： Getman Anton 哈尔滨工业大学

学位级别：硕士

This paper talks about the effect of heat treatmant (HT) on the cast and direction solidified (DS) Ti-46Al-6Nb and Ti-46Al-6.3Nb-0.1B compositions. These materials were prodused by cold crucible electromagnetic process. Samples were heat treated with six different conditions with the Muffle Atmosphere Furnace XY-1600A. HT1: temperature at1270℃for2h+air cooling. HT2:temperature at1330℃for2h+air cooling. HT3:temperature at1330℃for2h+900℃for30min+air cooling. HT4: temperature at1330℃for2h+air cooling, and then was repeat heating at1330℃for10min. HT5:temperature at1330℃for10min+air cooling, and then was repeated the same HT process. HT6:temperature at1330℃for10min+air cooling, and then was repeated the same HT process four times. After HT process all samples were polished, etched and prepared for further analysis. Firstly samples were taken pictures by a digital camera. Analysis of microstructure was performed by the optical microscope (OM) and the scanning electron microscope (SEM). After microstructure analysis all samples were cut into several small cylinders for compressive stress (CS) tests. CS test were tested by Inston5960Dual Column Tabletop Universal Testing Systems. Analysis of fracture mechanism before and after heat treatment was done by SEM.HT1decreased of average grain size of cast alloy from1.4mm to0.3mm, but didn't change the grain morphology of DS samples. Also HTlincreased of the lamellar spacing from2.46μm to4.38μm. The compressive stress decreased after HT1. HT2-HT4had insignificant influence on changing average grain size macrostructure of cast materials, but cardinally changed morphology and microstructure of DS materials. HT2-HT4and HT6caused elimination of all segregations. HT2-HT6decreased the lamellar spacing. The best result of compressive stress property had showed HT5. Also HT5caused the smallest lamellar spacing. HT1and HT2changed fracture mechanisms a little, but HT5and HT6significant changed fracture mechanism from inter or trans-lame

关键词： direction solidification grain size lamelae spacing TI-46Al-6Nb Ti-46Al-6.3Nb-0.1B compressive stress

来源：

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

全选清除本页清除全部题录导出标记到“检索档案”

共1页 << < 1 > >>

回到顶部

执行限定条件

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：