Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 4 of 4 for “"Weld cracking"”.
-
High temperature cracking of nickel chromium austenitic steels.
… a detailed classification of high temperature weld cracking is proposed. Two major types of cracking are recognised: Type 1 - separations along boundaries decorated with liquated second phase resulting from microsegregation, (solidification cracking in the weld metal and liquation cracking in …
-
A study of Laser weldability of IN-738 Nickel-based Superalloy in a new pre-weld heat treatment condition
A new pre-weld heat treatment was developed recently for IN 738 superalloy. Therefore, the research described in this master’s thesis was to study the laser weldability improvement of the alloy which had undergone the new heat treatment, FUMT and the results were compared to an existing pre-weld …
-
Predicting microstructural heterogeneities in the laser powder bed fusion of γ′ strengthened nickel-base superalloys
… with high γ′ content and hence, highly prone to weld-cracking. Multiple cracking mechanisms have been identified as active in the LPBF of various precipitation-strengthened superalloys. However, there is no precise understanding of how LPBF thermal processing conditions induce the development of …
-
Investigation of Weldability in High-Cr Ni-base Filler Metals
… have been used in the nuclear industry for weld overlay repair of dissimilar metal welds which have been affected by primary water stress corrosion cracking. During welding, defects may result from super-solidus and sub-solidus cracking phenomena. The ability to evaluate and quantify the …