Microstructure of Ti-6Al-4V specimens produced by shaped metal deposition

被引：100

作者：

Baufeld, Bernd ^{[1
]}

van der Biest, Omer ^{[1
]}

Gault, Rosemary ^{[2
]}

机构：

[1] Katholieke Univ Leuven, MTM, B-3001 Louvain, Belgium

[2] Univ Sheffield, AMRC, Sheffield, S Yorkshire, England

来源：

INTERNATIONAL JOURNAL OF MATERIALS RESEARCH | 2009年 / 100卷 / 11期

关键词：

Ti alloy; Ti-6Al-4V; Shaped metal deposition; Microstructure; Widmanstatten; MECHANICAL-PROPERTIES; TITANIUM-ALLOYS; LASER; EVOLUTION; FABRICATION; BUILDS;

D O I：

10.3139/146.110217

中图分类号：

TF [冶金工业];

学科分类号：

080601 [冶金物理化学];

摘要：

Shaped metal deposition is an innovative technology, which creates near-net shaped components by weld deposition and saves time and material due to the absence of further machining. For Ti alloys this is a big advantage, since these alloys are difficult to shape and also very expensive. Ti alloys are very sensitive to the thermal history and shaped metal deposition introduces for each welding step an additional temperature gradient leading to different microstructures in different regions. Regions which were in the single beta phase field during the last welding show a fine needle like microstructure, while regions within the alpha + beta phase show coarser lamellae forming a Widmanstatten structure.

引用

页码：1536 / 1542

页数：7

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