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Effect of periodic water clusters on AISI 304 welded surfaces

SYSNO ASEP	0537249
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Effect of periodic water clusters on AISI 304 welded surfaces
Author(s)	Srivastava, M. (IN) Nag, A. (IN) Krejčí, L. (CZ) Petrů, J. (CZ) Chattopadhyaya, S. (IN) Hloch, Sergej (UGN-S)_{RID, SAI, ORCID}
Number of authors	6
Article number	210
Source Title	Materials. - : MDPI Roč. 14, č. 1 (2021)
Number of pages	12 s.
Publication form	Online - E
Language	eng - English
Country	CH - Switzerland
Keywords	pulsating water jet ; welded joints ; stainless steel ; residual stress ; microhardness ; surface roughness
Subject RIV	JR - Other Machinery
OECD category	Mechanical engineering
R&D Projects	LO1406 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Method of publishing	Open access
Institutional support	UGN-S - RVO:68145535
UT WOS	000606239500001
EID SCOPUS	85099000867
DOI	10.3390/ma14010210
Annotation	This study compared the effect of the interaction time of periodic water clusters on the surface integrity of AISI 304 tungsten inert gas (TIG) welded joints at different excitation frequencies, as the effect of the technological parameters of pulsating water jet (PWJ) on the mechanical properties of TIG welded joints are under-researched. The TIG welded joints were subjected to different frequencies (20 and 40 kHz) and traverse speeds (1–4 mm/s) at a water pressure of 40 MPa and a standoff distance of 70 mm. The effect of the interaction of the pulsating jet on the material and the enhancement in its mechanical properties were compared through residual stress measurements, surface roughness, and sub-surface microhardness. A maximum enhancement in the residual stress values of up to 480 MPa was observed in the heat-affected zone, along with a maximum roughness of 6.03 µm and a maximum hardness of 551 HV using a frequency of 40 kHz. The improvement in the surface characteristics of the welded joints shows the potential of utilizing pulsed water jet technology with an appropriate selection of process parameters in the treatment of welded structures
Workplace	Institute of Geonics
Contact	Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354
Year of Publishing	2021
Electronic address	https://www.mdpi.com/1996-1944/14/1/210/htm

Number of the records: 1