Mapping and modelling single scan track formation in direct metal selective laser melting

被引：115

作者：

Childs, THC ^{[1
]}

Hauser, C ^{[1
]}

Badrossamay, M ^{[1
]}

机构：

[1] Univ Leeds, Sch Mech Engn, Leeds, W Yorkshire, England

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2004年 / 53卷 / 01期

基金：

英国工程与自然科学研究理事会;

关键词：

laser; sintering; FEM;

D O I：

10.1016/S0007-8506(07)60676-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

When a laser beam scans the surface of a metallic powder bed, the resulting track may be continuous with a crescent shape cross-section, continuous with an elliptical section, discontinuously irregularly broken, discontinuously balled or only partially melted. This paper reports experimental observations of what CO2 laser powers and scan speeds lead to what type of track, for M2 and H13 tools steels and 314S stainless steel powder beds. It also presents measurements of bed physical properties relevant to predicting the behaviour and the results of modelling that agree with the experiments. The results are placed in the broader context of selective laser melting build strategies

引用

页码：191 / 194

页数：4

共 13 条

[1]

Carslaw H. S., 1959, CONDUCTION HEAT SOLI

[2] Selective laser sintering of a crystalline and a glass-filled crystalline polymer: Experiments and simulations [J].

Childs, THC ;

Tontowi, AE .

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART B-JOURNAL OF ENGINEERING MANUFACTURE, 2001, 215 (11) :1481-1495

[3] BEHAVIOR OF METAL-ALLOYS IN THE SEMISOLID STATE [J].

FLEMINGS, MC .

METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1991, 22 (03) :269-293

[4]

KLOCKE F, ANN CIRP, V52, P177

[5] New ferro powder for selective laser sintering of dense parts [J].

Kruth, JP ;

Froyen, L ;

Rombouts, M ;

Van Vaerenbergh, J ;

Mercelis, P .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2003, 52 (01) :139-142

[6] Progress in additive manufacturing and rapid prototyping [J].

Kruth, JP ;

Leu, MC ;

Nakagawa, T .

CIRP ANNALS 1998 - MANUFACTURING TECHNOLOGY, VOL 47/2/1998: ANNALS OF THE INTERNATIONAL INSTITUTION FOR PRODUCTION ENGINEERING RESEARCH, 1998, :525-540

[7]

KRUTH JP, 1991, ANN CIRP, V40, P603

[8] Rapid manufacturing and rapid tooling with layer manufacturing (LM) technologies, state of the art and future perspectives [J].

Levy, GN ;

Schindel, R ;

Kruth, JP .

CIRP ANNALS-MANUFACTURING TECHNOLOGY, 2003, 52 (02) :589-609

[9] Selective laser sintering of gas atomized M2 high speed steel powder [J].

Niu, HJ ;

Chang, ITH .

JOURNAL OF MATERIALS SCIENCE, 2000, 35 (01) :31-38

[10] Pearling and pinching: Propagation of Rayleigh instabilities [J].

Powers, TR ;

Goldstein, RE .

PHYSICAL REVIEW LETTERS, 1997, 78 (13) :2555-2558

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