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Title: On the interface between LENS deposited stainless steel 304L repair geometry and cast or machined components.

Abstract

Laser Engineered Net Shaping (LENS) is being evaluated for use as a metal component repair/modification process for the NWC. An aspect of the evaluation is to better understand the characteristics of the interface between LENS deposited material and the substrate on which it is deposited. A processing and metallurgical evaluation was made on LENS processed material fabricated for component qualification tests. A process parameter evaluation was used to determine optimum build parameters and these parameters were used in the fabrication of tensile test specimens to study the characteristics of the interface between LENS deposited material and several types of substrates. Analyses of the interface included mechanical properties, microstructure, and metallurgical integrity. Test samples were determined for a variety of geometric configurations associated with interfaces between LENS deposited material and both wrought base material and previously deposited LENS material. Thirteen different interface configurations were fabricated for evaluation representing a spectrum of deposition conditions from complete part build, to hybrid substrate-LENS builds, to repair builds for damaged or re-designed housings. Good mechanical properties and full density were observed for all configurations. When tested to failure, fracture occurred by ductile microvoid coalescence. The repair and hybrid interfaces showed the same metallurgical integrity as,more » and had properties similar to, monolithic LENS deposits.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Sandia National Laboratories
Sponsoring Org.:
USDOE
OSTI Identifier:
919107
Report Number(s):
SAND2004-4035
TRN: US200825%%184
DOE Contract Number:
AC04-94AL85000
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COALESCENCE; DEPOSITION; EVALUATION; FABRICATION; FRACTURES; GEOMETRY; LASERS; MECHANICAL PROPERTIES; MICROSTRUCTURE; PROCESSING; REPAIR; STAINLESS STEEL-304L; SUBSTRATES; Machine design.; LASER APPLICATIONS; Manufactured Materials.; Steel, Stainless.

Citation Formats

Smugeresky, John E., Harris, Marc F., Griffith, Michelle Lynn, Gill, David Dennis, and Robino, Charles Victor. On the interface between LENS deposited stainless steel 304L repair geometry and cast or machined components.. United States: N. p., 2004. Web. doi:10.2172/919107.
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Smugeresky, John E., Harris, Marc F., Griffith, Michelle Lynn, Gill, David Dennis, & Robino, Charles Victor. On the interface between LENS deposited stainless steel 304L repair geometry and cast or machined components.. United States. doi:10.2172/919107.
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Smugeresky, John E., Harris, Marc F., Griffith, Michelle Lynn, Gill, David Dennis, and Robino, Charles Victor. Wed . "On the interface between LENS deposited stainless steel 304L repair geometry and cast or machined components.". United States. doi:10.2172/919107. https://www.osti.gov/servlets/purl/919107.
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@article{osti_919107,
title = {On the interface between LENS deposited stainless steel 304L repair geometry and cast or machined components.},
author = {Smugeresky, John E. and Harris, Marc F. and Griffith, Michelle Lynn and Gill, David Dennis and Robino, Charles Victor},
abstractNote = {Laser Engineered Net Shaping (LENS) is being evaluated for use as a metal component repair/modification process for the NWC. An aspect of the evaluation is to better understand the characteristics of the interface between LENS deposited material and the substrate on which it is deposited. A processing and metallurgical evaluation was made on LENS processed material fabricated for component qualification tests. A process parameter evaluation was used to determine optimum build parameters and these parameters were used in the fabrication of tensile test specimens to study the characteristics of the interface between LENS deposited material and several types of substrates. Analyses of the interface included mechanical properties, microstructure, and metallurgical integrity. Test samples were determined for a variety of geometric configurations associated with interfaces between LENS deposited material and both wrought base material and previously deposited LENS material. Thirteen different interface configurations were fabricated for evaluation representing a spectrum of deposition conditions from complete part build, to hybrid substrate-LENS builds, to repair builds for damaged or re-designed housings. Good mechanical properties and full density were observed for all configurations. When tested to failure, fracture occurred by ductile microvoid coalescence. The repair and hybrid interfaces showed the same metallurgical integrity as, and had properties similar to, monolithic LENS deposits.},
doi = {10.2172/919107},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 01 00:00:00 EST 2004},
month = {Wed Dec 01 00:00:00 EST 2004}
}
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DOI:  10.2172/919107
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