Solidification in direct metal deposition by LENS processing

Authors
Hofmeister, W Griffith, M Ensz, M Smugeresky, J
Citation
W. Hofmeister et al., Solidification in direct metal deposition by LENS processing, JOM-J MIN, 53(9), 2001, pp. 30-34
Citations number
24
Categorie Soggetti
Metallurgy
Journal title
JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY
ISSN journal
10474838 → ACNP
Volume
53
Issue
9
Year of publication
2001
Pages
30 - 34
Database
ISI
SICI code
1047-4838(200109)53:9<30:SIDMDB>2.0.ZU;2-9
Abstract
Thermal imaging and metallographic analysis were used to study Laser Engine ered Net Shaping (LENS(TM)) processing of 316 stainless steel and H13 tool steel. The cooling rates at the solid-liquid interface were measured over a range of conduction conditions. The length scale of the molten zone contro ls cooling rates during solidification in direct metal deposition. In LENS processing, the molten zone ranges from 0.5 non in length to 1.5 mm, result ing in cooling rates at the solid-liquid interface ranging from 200-6,000 K s(-1).