Microstructure of Interpass Rolled Wire plus Arc Additive Manufacturing Ti-6Al-4V Components

被引：228

作者：

Martina, Filomeno ^{[1
]}

Colegrove, Paul A. ^{[1
]}

Williams, Stewart W. ^{[1
]}

Meyer, Jonathan ^{[2
]}

机构：

[1] Cranfield Univ, Welding Engn & Laser Proc Ctr, Cranfield MK43 0AL, Beds, England

[2] Airbus Grp Innovat, Bristol BS99 7AR, Avon, England

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2015年 / 46A卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

MECHANICAL-PROPERTIES; EVOLUTION; BUILDS; WELDS;

D O I：

10.1007/s11661-015-3172-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mechanical property anisotropy is one of the issues that are limiting the industrial adoption of additive manufacturing (AM) Ti-6Al-4V components. To improve the deposits' microstructure, the effect of high-pressure interpass rolling was evaluated, and a flat and a profiled roller were compared. The microstructure was changed from large columnar prior beta grains that traversed the component to equiaxed grains that were between 56 and 139 mu m in size. The repetitive variation in Widmanstatten alpha lamellae size was retained; however, with rolling, the overall size was reduced. A ''fundamental study'' was used to gain insight into the microstructural changes that occurred due to the combination of deformation and deposition. High-pressure interpass rolling can overcome many of the shortcomings of AM, potentially aiding industrial implementation of the process. (C) The Author(s) 2015. This article is published with open access at Springerlink.com

引用

页码：6103 / 6118

页数：16

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