Title :
Application of ultrasonic shock surface treatment to increase fatigue strength of structural steel weldments
Author :
Pleshanov, V.S. ; Lebedeva, N.A. ; Klimenov, V.A. ; Nekhoroshkov, O.N. ; Kobzeva, S.A. ; Pochivalov, Yu.I. ; Kibitkin, V.V. ; Panin, V.E.
Author_Institution :
Inst. of Strength Phys. & Mater. Sci., Acad. of Sci., Tomsk, Russia
fDate :
26 June-3 July 2004
Abstract :
The high efficiency of ultrasonic shock treatment (UST) to reinforce the surface of weldments of structural heat-resistant and high-strength steels is shown. UST leads to fine grain microstructure at subsurface layer with depth of ∼0.2 mm. It was discovered that surface hardening is a cause of increasing the fatigue strength of weldments more than 1.5 times.
Keywords :
crystal microstructure; fatigue; fine structure; steel; structural engineering; surface hardening; ultrasonic applications; welding; fatigue strength; fine grain microstructure; high-strength steels; structural heat-resistant steels; structural steel weldments; subsurface layer; surface hardening; ultrasonic shock surface treatment; Electric shock; Fatigue; Mechanical factors; Microstructure; Steel; Stress; Surface cracks; Surface resistance; Surface treatment; Welding;
Conference_Titel :
Science and Technology, 2004. KORUS 2004. Proceedings. The 8th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8383-4
DOI :
10.1109/KORUS.2004.1555696
