Parametric optimisation and microstructural analysis on high power Yb-fibre laser welding of Ti-6Al-4V

被引：60

作者：

Ahn, J. ^{[1
]}

Chen, L. ^{[2
]}

Davies, C. M. ^{[1
]}

Dear, J. P. ^{[1
]}

机构：

[1] Imperial Coll London, Dept Mech Engn, South Kensington Campus, London SW7 2AZ, England

[2] Beijing Aeronaut Mfg Technol Res Inst, Sci & Technol Power Beam Lab, Beijing, Peoples R China

来源：

OPTICS AND LASERS IN ENGINEERING | 2016年 / 86卷

基金：

英国工程与自然科学研究理事会;

关键词：

Ti-6Al-4V; Fibre laser; Welding; Microstructure; Titanium alloy; Porosity; POROSITY FORMATION; TENSILE; FLOW;

D O I：

10.1016/j.optlaseng.2016.06.002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this work thin sheets of Ti-6Al-4V were full penetration welded using a 5 kW fibre laser in order to evaluate the effectiveness of high power fibre laser as a welding processing tool for welding Ti-6Al-4V with the requirements of the aircraft industry and to determine the effect of welding parameters including laser power, welding speed and beam focal position on the weld microstructure, bead profile and weld quality. It involved establishing an understanding of the influence of welding parameters on microstructural change, welding defects, and the characteristics of heat affected zone (HAZ) and weld metal (WM) of fibre laser welded joints. The optimum range of welding parameters which produced welds without cracking and porosity were identified. The influence of the welding parameters on the weld joint heterogeneity was characterised by conducting detailed microstructural analysis. Crown Copyright (C) 2016 Published by Elsevier Ltd. All rights reserved.

引用

页码：156 / 171

页数：16

共 51 条

[1] Phase transformations during cooling in α+β titanium alloys [J].

Ahmed, T ;

Rack, HJ .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1998, 243 (1-2) :206-211

[2]

[Anonymous], 2005, ISOTR1767162005

[3]

[Anonymous], WELD J

[4]

[Anonymous], 1997, 13211997 BS EN

[5]

[Anonymous], 2012, D171D171M2010AMD1 AW

[6]

[Anonymous], 2011, 46782011 BS EN

[7]

[Anonymous], 2009, NORD C LAS PROC MAT

[8]

[Anonymous], 2005, 101162005 BS EN

[9]

[Anonymous], 2001, 139192 ISO

[10]

[Anonymous], 2002, 15614112002 BS EN IS

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