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The present study was developed surrounding the heat treatability of welded joints made with a high strength ductile cast iron detaining an ultimate tensile strength of 700 MPa, and aims to determine which heat treatment procedures promote the best results, in terms of microstructure and mechanical properties.
14 lip 2019 · Post weld heat treatments (PWHT) can lower the hardness of the HAZ but do not restore ductility and toughness to its own original values, due to the formation of a fine dispersion of secondary graphite that accompanies the decomposition of martensite.
27 sie 2024 · In particular, the dissimilar welding joints of ductile cast iron to stainless steel have attracted much attention due to cooperative advantages such as high strength, corrosion resistance,...
The present work analyses the strength and microstuctural variations of ductile cast iron welded by means of the TIG technique, without heat treatment and using different filler materials (pearlitic malleable cast iron, Fe-Ni alloy and bronze and manganese alloy).
This work compares the weldability of ductile iron when: (I) a root weld is applied with a tungsten inert gas (TIG) process using an Inconel 625 source rod and filler welds are subsequently applied using coated electrodes with 97,6 %Ni; and (II) welds on ductile iron exclusively made using the manual shielded metal arc welding technique (SMAW).
Welding of various types of cast iron by oxy-fuel, MMA, MIG and FCA welding processes is discussed with emphasis on weldability.
Weldability of ductile cast iron depends on its original matrix [3-4]. Similar welding of ductile cast iron has received considerable investigations among researchers [5-9]....
