Steels with high carbon equivalent have poor Weldability, because in these steels during welding________________?
Correct answer: C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
- A. Carbon and other alloying elements get oxidised from the weld pool
- B. Excessive ferrite forms in the heat affected zone leading to poor toughness of the weld
- C. Martensite forms in the heat affected zone leading to poor toughness/ductility of the weld
- D. Segregation of carbon and other element occurs in the weld pool leading to poor properties of
- E. the weld
Explanation
A high carbon equivalent increases hardenability, so rapid cooling of the heat-affected zone can produce hard, brittle martensite. This martensite reduces weld toughness and ductility and may promote cracking.
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