To obtain an steel with fine pearlite we perform the commercial heat treatment known as total annealing.
A: 正确
B: 错误
A: 正确
B: 错误
举一反三
- To obtain an steel with fine pearlite we perform the commercial heat treatment known as total annealing
- The proper preliminary heat treatment for T12 steel is . A: complete annealing B: homogenizing annealing C: spheroidizing annealing D: isothermal annealing
- During heat treatment of steel, austenite transforms into martensite by A: annealing B: austenitizing C: quenching D: normalizing
- To improve the machinability of low carbon steel, the heat treatment process usually used is ( ) . A: quenching B: tempering C: annealing D: normalizing
- In the as-quenched state, martensite is very hard and so brittle that a heat treatment known as_________must be accomplished sequently. A: normalizing B: annealing C: tempering D: austempering