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The behaviour of coarse-grain HAZ steel with small defects during cycling loading = Vedenje jekla grobozrnatega TVP z napakami pri ciklični obremenitviGliha, Vladimir ; Vuherer, TomažThe effects of small, artificial surface defects on the fatigue strength of coarse grain HAZ material found at the weld toe were studied. The size of defects did not exceed the grain size, which is ... the most relevant microstructural unit of polycrystalline metals. The artificial defects were made by indenting the material with Vicker`s pyramid and by drilling holes. The samples of coarse-grain HAZ material were prepared using a welding thermal-cycle simulator or furnace. The mexperimentally determined bending fatigue strength versus the properly evaluated defects siye was compared with the propagation of long cracks. Residual stresses appear when making small artificial defects. The crack initiation from the defects was analysed and theinfluence of residual stresses is discussed.Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 41, št. 3, 2007, str. 125-130)Vrsta gradiva - članek, sestavni delLeto - 2007Jezik - angleškiCOBISS.SI-ID - 11446550
Avtor
Gliha, Vladimir |
Vuherer, Tomaž
Teme
varjenje |
zvarni spoji |
TVP |
rob zvara |
groba zrna |
dinamična trdnost |
umetne napake |
stabilna razpoka |
zaostale napetosti |
welding |
welded joints |
HAZ |
weld toe |
coarse grain |
fatigue strength |
artificial defect |
residual stresses |
non-propagating crack
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Gliha, Vladimir | 05168 |
Vuherer, Tomaž | 15682 |
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