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Analysis and prevention of weld crater cracking in circumferential laser microwelding of automotive pressure sensorsKenda, Miha ...An analysis presents a weld leakage problems of automotive pressure sensor, caused by weld crater cracking. A two-beam laser welding (TBLW) was used to weld a circumferential weld, which undesirably ... increases the probability of weld leakage by creating two weld end craters on a single weld. Microstructural analysis showed that microsegregation of alloying elements combined with imposed strains causes solidification cracking at the weld end crater. A novel "zigzag" laser power ramp-down was used and the results showed a limited crack propagation by producing significantly shorter discontinuous cracks. In such weld crater endings the leakage is no longer an issue.Source: Engineering failure analysis. - ISSN 1350-6307 (Vol. 128, Oct. 2021, str. 1-14)Type of material - article, component partPublish date - 2021Language - englishCOBISS.SI-ID - 69793539
Author
Kenda, Miha |
Klobčar, Damjan |
Nagode, Aleš, 1975- |
Bračun, Drago
Topics
two-beam laser welding |
continuous-wave |
solidification cracking |
weld termination regime |
ramp-down |
lap joint |
17-4 PH steel |
Inconel 602 |
lasersko varjenje z dvojnim žerkom |
kontinuirno varjenje |
razpoke v vročem |
zaključevanje laserskih zvarov |
zaključna rampa |
prekrovni spoj |
17-4 PH |
Inconel 602
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Kenda, Miha | 52643 |
Klobčar, Damjan | 20441 |
Nagode, Aleš, 1975- | 24381 |
Bračun, Drago | 18327 |
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