Fabrication of Fe-Cr-Al Oxide Dispersion Strengthened PM2000 Alloy Using Selective Laser Melting

被引：85

作者：

Walker, John C. ^{[1
]}

Berggreen, Kaj M. ^{[1
]}

Jones, Andy R. ^{[1
]}

Sutcliffe, Chris J. ^{[1
]}

机构：

[1] Univ Liverpool, Dept Engn, Liverpool L69 3GH, Merseyside, England

来源：

ADVANCED ENGINEERING MATERIALS | 2009年 / 11卷 / 07期

基金：

英国工程与自然科学研究理事会;

关键词：

VOLUME FRACTION; PARTICLE-SIZE; HEAT-TRANSFER; OXIDATION; PM-2000;

D O I：

10.1002/adem.200800407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The suitability of PM2000 for rapid prototyping (RP) solutions using selective laser melting (SLM) process by varying the laser power and scan speed for an optimum oxide dispersion strengthened (ODS) dispersion was assessed. Powder samples for particle size measurement were produced by dispersing small amount of powder in deionized water with the aid of a non-ionic surfactant and an ultrasonic probe. The as-received PM2000 powder exhibit a bi-modal particle size distribution with a median particle size of 47.2 μm and peaks at 42.5 and 218.7 μm. Electron channeling contrast images from polished flat and end sections of the walls reveal columnar grain structures of the order of 100μm in length. The columnar grain structures show a complete melting of the PM2000 alloy, resulting in high density walls.

引用

页码：541 / 546

页数：6

共 27 条

[1] Direct selective laser sintering of metals [J].

Agarwala, Mukesh ;

Bourell, David ;

Beaman, Joseph ;

Marcus, Harris ;

Barlow, Joel .

RAPID PROTOTYPING JOURNAL, 1995, 1 (01) :26-36

[2] The influence of the moisture content of the atmosphere on alumina scale formation and growth during high temperature oxidation of PM2000 [J].

Al-Badairy, H ;

Tatlock, GJ .

MATERIALS AT HIGH TEMPERATURES, 2000, 17 (01) :133-137

[3] ESTIMATING EFFECTS OF PROCESSING CONDITIONS AND VARIABLE PROPERTIES UPON POOL SHAPE, COOLING RATES, AND ABSORPTION-COEFFICIENT IN LASER-WELDING [J].

CHANDE, T ;

MAZUMDER, J .

JOURNAL OF APPLIED PHYSICS, 1984, 56 (07) :1981-1986

[4] Marangoni convection and fragmentation in laser treatment [J].

Drezet, JM ;

Mokadem, S .

SOLIDIFICATION AND GRAVITY IV, 2006, 508 :257-262

[5] Interface interactions between porous titanium/tantalum coatings, produced by Selective Laser Melting (SLM), on a cobalt-chromium alloy [J].

Fox, P. ;

Pogson, S. ;

Sutcliffe, C. J. ;

Jones, E. .

SURFACE & COATINGS TECHNOLOGY, 2008, 202 (20) :5001-5007

[6] Heat transfer modelling and stability analysis of selective laser melting [J].

Gusarov, A. V. ;

Yadroitsev, I. ;

Bertrand, Ph. ;

Smurov, I. .

APPLIED SURFACE SCIENCE, 2007, 254 (04) :975-979

[7]

Hirsch P. B., 1965, Electron Microscopy of Thin Crystals

[8]

Kelly TJ., 1979, AIP C P, V50, P215, DOI [10.1063/1.31662, DOI 10.1063/1.31662]

[9] TEM study of PM 2000 steel [J].

Klimiankou, M ;

Lindau, R ;

Möslang, A ;

Schröder, J .

POWDER METALLURGY, 2005, 48 (03) :277-287

[10] Consolidation phenomena in laser and powder-bed based layered manufacturing [J].

Kruth, J. -P. ;

Levy, G. ;

Klocke, F. ;

Childs, T. H. C. .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2007, 56 (02) :730-759

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