题目内容

HTLA steels are ().

A. medium carbon
B. low carbon
C. high alloy
D. high carbon
E. 2-3-1
F. 期末

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Microstructures of plain carbon steels include ().

A. ferrite
B. pearlite
C. martensite
D. ledeburite
E. 2-1-1
F. 期末

If the carbon content of a type of steel is 0.1%, this steel is a kind of ().

A. low-carbon steel
B. medium-carbon steel
C. high-carbon steel
D. HTLA steel
E. 2-1-1
F. 章测

______ cracking is generally encountered during postweld heat treatment (PWHT) of steels.

Liquation cracking temperature range (LCTR) represents a measure of______ susceptibility.