An experimental and modelling study of laser fabricated samples

被引：4

作者：

Qian, L. ^{[1
]}

Mei, J. ^{[1
]}

Wu, X. ^{[1
]}

机构：

[1] Univ Birmingham, IRC Mat Proc, Birmingham B15 2TT, W Midlands, England

来源：

THERMEC 2006, PTS 1-5 | 2007年 / 539-543卷

基金：

英国工程与自然科学研究理事会;

关键词：

finite element; thermal modelling; Ti-6Al-4V; martensite;

D O I：

10.4028/www.scientific.net/MSF.539-543.3637

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Solid samples about 20mm long, 20mm in breadth and about 2mm thick of Ti-6Al-4V have been produced from powder using direct laser fabrication, The temperature histories of individual layers have been measured by inserting thermocouples during laser fabrication. The changes in microstructure along the height of the laser fabricated samples have been characterized using optical, scanning electron and transmission electron microscopy, together with X-ray diffraction. A 3D-transient finite element model using ABAQUS has been developed which predicts thermal history during laser fabrication with reasonable accuracy. The thermal histories of different parts of the sample have been used to interpret the influence of the processing variables on the microstructures.

引用

页码：3637 / +

页数：2

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