Welding and Corrosion Behavior of AISI H13 Welds: The Effect of Filler Metal on the Microstructural Evolutions

Welding of AISI H13 tool steel which is mainly used in mold making is difficult due to the some alloying elements and it high hardenability. The effect filler metal composition on the microstructural changes, phase evolutions, and hardness during gas tungsten arc welding of AISI H13 hot work tool st...

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Bibliographic Details
Published inArchives of metallurgy and materials Vol. 66; no. 3; pp. 839 - 846
Main Authors Varmaziar, Sadegh, Mostaan, Hossein, Rafiei, Mahdi, Yeganeh, Mahdi
Format Journal Article
LanguageEnglish
Published Warsaw Polish Academy of Sciences 01.01.2021
Subjects
aisi h13 tool steel
Alloying elements
Chromium molybdenum vanadium steels
Composition effects
Corrosion
Corrosion effects
Corrosion rate
Corrosion resistance
Corrosion resistant steels
Corrosion tests
Electrochemical impedance spectroscopy
filler metal
Filler metals
Gas tungsten arc welding
Hardenability
Hardness
Hot work tool steels
Maraging steels
Metals
Microstructure
Polarization
Weld metal
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Summary:Welding of AISI H13 tool steel which is mainly used in mold making is difficult due to the some alloying elements and it high hardenability. The effect filler metal composition on the microstructural changes, phase evolutions, and hardness during gas tungsten arc welding of AISI H13 hot work tool steel was investigated. Corrosion resistance of each weld was studied. For this purpose, four filler metals i.e. ER 312, ER NiCrMo-3, ER 80S, and 18Ni maraging steel were supplied. Potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) were used to study the corrosion behavior of weldments. It was found the ER 80S weld showed the highest hardness owing to fully martensitic microstructure. The hardness in ER 312 and ER NiCrMo3 weld metals was noticeably lower than that of the other weld metals in which the microstructures mainly consisted of austenite phase. The results showed that the corrosion rate of ER 312 weld metal was lower than that other weld metals which is due to the high chromium content in this weld metal. The corrosion rate of ER NiCrMo-3 was lower than that of 18Ni maraging weld. The obtained results from EIS tests confirm the findings of potentiodynamic polarization tests.
ISSN:1733-3490
2300-1909
DOI:10.24425/amm.2021.136388