激光直接沉积TC17/TC11双合金的组织及性能

IMR OpenIR

	激光直接沉积TC17/TC11双合金的组织及性能
其他题名	Microstructure and Tensile Properties of TC17/TC11 Dual Alloy Fabricated with Laser Melting Deposition Method
	尹续臣 1; 刘建荣 1; 王清江 1; 王磊 1; 李怀学 3
	2020
发表期刊	稀有金属材料与工程
ISSN	1002-185X
卷号	49.0 期号:003 页码:1024-1030
摘要	研究了直接连接及梯度连接2种激光直接沉积TC17/TC11双合金的显微组织及力学性能。结果表明,2种连接方式成形的TC17/TC11双合金均可分为TC17均一成分区、过渡区及TC11均一成分区3个区域,沉积态下,2种连接方式均一成分区显微组织呈层带状周期分布;直接连接TC17/TC11双合金过渡区极窄,两侧化学成分、显微组织在交界处发生突变;梯度连接TC17/TC11双合金过渡区厚度较大,过渡区化学成分呈连续过渡,显微组织受成分变化和热循环双重影响,呈介于TC17和TC11中间态显微组织;直接连接过渡区显微硬度存在突变,梯度连接过渡区显微硬度由TC17侧逐渐过渡至TC11侧;直接连接和梯度连接样品室温拉伸断裂位置均在TC11均一成分区,强度接近,延伸率分散度较大。
其他摘要	The microstructure and tensile properties of TC17/TC11 dual alloy fabricated with direct laser melting deposition method by two connecting processes(direct connection and gradient connection) were investigated. The results show that the TC17/TC11 dual alloy can be divided into three parts: uniform TC17 zone, transition zone and uniform TC11 zone. The as-deposited microstructure of uniform TC17 and TC11 zones shows cyclic layer-like characteristics. For direct connection process, there exists an extremely narrow transition zone between TC17 and TC11 zones. Sharp changes both in chemical composition and microstructure are found between uniform TC17 and TC11 zones. For gradient connection process, the transition zone encompasses a wider region in which continuous changes of chemical composition and microhardness are found. The intermediate microstructure which is different from that of TC17 and TC11 emerges in the gradient transition zone. Room temperature tensile tests show that all as-deposited dual alloy samples regardless of connecting process are fractured in the TC11 zone, with approximate tensile strengths and dispersed elongations.
关键词	激光沉积直接连接梯度连接显微组织拉伸性能
收录类别	CSCD
语种	中文
CSCD记录号	CSCD:6688020
引用统计	被引频次：1[CSCD] [CSCD记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155567
专题	中国科学院金属研究所
作者单位	1.中国科学院金属研究所 2.中国科学技术大学 3.中国航空制造技术研究院
推荐引用方式 GB/T 7714	尹续臣,刘建荣,王清江,等. 激光直接沉积TC17/TC11双合金的组织及性能[J]. 稀有金属材料与工程,2020,49.0(003):1024-1030.
APA	尹续臣,刘建荣,王清江,王磊,&李怀学.(2020).激光直接沉积TC17/TC11双合金的组织及性能.稀有金属材料与工程,49.0(003),1024-1030.
MLA	尹续臣,et al."激光直接沉积TC17/TC11双合金的组织及性能".稀有金属材料与工程 49.0.003(2020):1024-1030.