贝氏体的微观结构由______和______组成。
A: ferrite and cementite
B: austenite and ferrite
C: austenite and cementite
D: ferrite and pearlite
A: ferrite and cementite
B: austenite and ferrite
C: austenite and cementite
D: ferrite and pearlite
举一反三
- 英译汉： Carbon steel(碳钢) Martensite(马氏体) Pearlite(珠光体) Cementite(渗碳体) Ferrite(铁素体) Austenite(奥氏体) annealing(退火), normalizing(正火), quenching(淬火), and tempering(回火)
- Quenching<br/>is the heat treatment by which austenite transforms to ____. A: bainite B: pearlite C: martensite D: ferrite
- The key transition described in this diagram is the of single-phase austenite (γ) to the two-phase ferrite plus carbide structure as temperature drops.
- δ-ferrite is stable only at relatively high temperatures.
- 中国大学MOOC: 贝氏体的微观结构由______和______组成。