For fabricating complex AISI304 parts with high performance by advanced powder/metallurgy technologies, cold isostatic pressing (CIP) is introduced into selective laser sintering (SLS) combined with hot isostatic pressing (HIP), which is abbreviated to selective laser sintering/isostatic pressed (SLS/IP). The effect of processing parameters on the densification of Cu–AISI304 parts is analyzed and then the influence of Cu on their relative densities, metallurgical structures, and mechanical performances are investigated. The results show that relative densities of Cu–AISI304 parts fabricated by SLS/IP are mainly influenced by CIP pressure and sintering temperature, and it is interesting to find that the formula is testified by the CIP of SLS/IP. There is an antidensification phenomenon resulting from Cu and AISI304 in liquid sintering, but the relative densities of Cu–AISI304 parts can be gradually improved in HIP with Cu content increasing from to . After the above-mentioned Cu–AIS304 parts are finally hot isostatic pressed, their metallurgical structures consist of sosoloid (Cu,Ni) and (Fe,Ni) besides austenite (Fe,Cr,Ni,C), their best mechanical performances are close to those of solution treated compact AISI304 when Cu content is .
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August 2009
Research Papers
Microstructures and Properties of Cu–AISI304 Parts Fabricated by Improved Selective Laser Sintering
Z. L. Lu,
Z. L. Lu
State Key Laboratory for Manufacturing Systems Engineering,
e-mail: 723LZL@163.com
Xi’an Jiao Tong University
, Xi’an 710049, China
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J. H. Liu,
J. H. Liu
Heilongjiang University of Science and Technology
, Harbin 150027, China
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Y. S. Shi
Y. S. Shi
State Key Laboratory of Material Processing and Die and Mould Technology,
HUST
, Wuhan 430074, China
Search for other works by this author on:
Z. L. Lu
State Key Laboratory for Manufacturing Systems Engineering,
Xi’an Jiao Tong University
, Xi’an 710049, Chinae-mail: 723LZL@163.com
J. H. Liu
Heilongjiang University of Science and Technology
, Harbin 150027, China
Y. S. Shi
State Key Laboratory of Material Processing and Die and Mould Technology,
HUST
, Wuhan 430074, ChinaJ. Manuf. Sci. Eng. Aug 2009, 131(4): 041018 (6 pages)
Published Online: July 16, 2009
Article history
Received:
October 30, 2008
Revised:
June 5, 2009
Published:
July 16, 2009
Citation
Lu, Z. L., Liu, J. H., and Shi, Y. S. (July 16, 2009). "Microstructures and Properties of Cu–AISI304 Parts Fabricated by Improved Selective Laser Sintering." ASME. J. Manuf. Sci. Eng. August 2009; 131(4): 041018. https://doi.org/10.1115/1.3168444
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