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GATE Mechanical 2014 Set 4 | Question: 20

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Within the Heat Affected Zone (HAZ) in a fusion welding process, the work material undergoes

  1. microstructural changes but does not melt
  2. neither melting nor microstructural changes
  3. both melting and microstructural changes after solidification
  4. melting and retains the original microstructure after solidification

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