The problems that ferritic steel produces during welding are ( ) and ( ).
A: Grain refinement
B: Intergranular corrosion
C: Toughness increase
D: Hardening tendency
A: Grain refinement
B: Intergranular corrosion
C: Toughness increase
D: Hardening tendency
举一反三
- The problems that ferritic steel produces during welding are ( ). A: Grain refinement B: Intergranular corrosion C: Toughness increase D: Hardening tendency
- Boron is added to structural steel to increase its ( ). A: tempering stability B: toughness C: hardenability D: hardening capacity
- Which of the following are characteristics of the steel structure? A: High strength and low weight B: Good plasticity and toughness C: Easy to manufacture and construct D: Weak corrosion resistance
- With （）， the corrosion problems are much reduced in a central cooling system.
- If the heating temperature is increased after recrystallization, ( ) will take place. A: secondary recrystallization B: fine grain strengthening C: work hardening D: solid solution strengthening