During heat treatment of steel, austenite transforms into martensite by
A: annealing
B: austenitizing
C: quenching
D: normalizing
A: annealing
B: austenitizing
C: quenching
D: normalizing
举一反三
- Quenching<br/>is the heat treatment by which austenite transforms to ____. A: bainite B: pearlite C: martensite D: ferrite
- ____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
- To improve the machinability of low carbon steel, the heat treatment process usually used is ( ) . A: quenching B: tempering C: annealing D: normalizing
- 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)
- For<br/>1080 steel, normalizing is a heat treatment obtained by austenitizing<br/>and ____ cooling. A: air B: furnace C: water D: oil