Practice Test GeeksAWS Practice Test
← All AWS Flashcard Decks

AWS Metallurgy & Materials Flashcards

6 cards from real AWS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 AWS Metallurgy & Materials flashcards as text

  1. Which iron-carbon phase forms when austenite is rapidly quenched and is known for its high hardness?

    Answer: Martensite

    Martensite forms during rapid quenching of austenite and is the hardest iron-carbon microstructure.

  2. What is the carbon content range (by weight) that defines low-carbon (mild) steel?

    Answer: 0.15%–0.30%

    Low-carbon or mild steel contains approximately 0.15%–0.30% carbon by weight.

  3. The heat-affected zone (HAZ) in a weldment is the region that:

    Answer: Was heated but did not melt, yet had its microstructure altered

    The HAZ is the base metal region adjacent to the weld that was heated enough to alter its microstructure without melting.

  4. Which alloying element in steel primarily improves hardenability by slowing the austenite-to-pearlite transformation?

    Answer: Chromium

    Chromium is a strong carbide former that significantly improves hardenability in steel.

  5. What does the term 'weldability' primarily describe?

    Answer: The ease with which a metal can be welded to produce a sound joint

    Weldability refers to how readily a material can be welded to form a defect-free, serviceable joint.

  6. Preheating before welding high-carbon steel primarily serves to:

    Answer: Reduce the risk of hydrogen-induced cracking

    Preheat slows the cooling rate of the HAZ, reducing hydrogen-induced (cold) cracking susceptibility.