Microstructure and Mechanical Properties of Ti-6Al-4V Welds Produced with Different Processes
Artikel i vetenskaplig tidskrift, 2024

The effect of defects and microstructure on the mechanical properties of Ti-6Al-4V welds produced by tungsten inert gas welding; plasma arc welding; electron beam welding; and laser beam welding was studied in the present work. The mechanical properties of different weld types were evaluated with respect to micro hardness; yield strength; ultimate tensile strength; ductility; and fatigue at room temperature and at elevated temperatures (200 ◦C and 250 ◦C). Metallographic investigation was carried out to characterize the microstructures of different weld types, and fractographic investigation was conducted to relate the effect of defects on fatigue performance. Electron and laser beam welding produced welds with finer microstructure, higher tensile ductility, and better fatigue performance than tungsten inert gas welding and plasma arc welding. Large pores, and pores located close to the specimen surface, were found to be most detrimental to fatigue life.

porosity

microstructure

titanium alloys

defects

fatigue

welding

Författare

Sakari Tolvanen

Chalmers, Industri- och materialvetenskap

Robert Pederson

Högskolan Väst

Uta Klement

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Materials

19961944 (eISSN)

Vol. 17 4 782-

Drivkrafter

Hållbar utveckling

Styrkeområden

Produktion

Ämneskategorier

Annan materialteknik

Metallurgi och metalliska material

DOI

10.3390/ma17040782

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Senast uppdaterat

2024-04-02