The optical micrograph below shows fine, needle-shaped grains of a eutectoid steel subjected to a different heat treatment compared to the steels whose microstructures were shown in micrographs A and B. Select the correct statement regarding the microstructure shown below.
/ Die optiese mikrograaf hieronder toon fyn, naaldvormige korrels van 'n eutektoïede staal wat aan 'n ander hittebehandeling onderwerp is in vergelyking met die staal waarvan die mikrostrukture in mikrograwe A en B getoon is. Kies die korrekte stelling met betrekking tot die mikrostruktuur wat hieronder getoon word.

Question

The optical micrograph below shows fine, needle-shaped grains of a eutectoid steel subjected to a different heat treatment compared to the steels whose microstructures were shown in micrographs A and B. Select the correct statement regarding the microstructure shown below.  
 / Die optiese mikrograaf hieronder toon fyn, naaldvormige korrels van 'n eutektoïede staal wat aan 'n ander hittebehandeling onderwerp is in vergelyking met die staal waarvan die mikrostrukture in mikrograwe A en B getoon is. Kies die korrekte stelling met betrekking tot die mikrostruktuur wat hieronder getoon word.

Accepted Answer

It is martensite - it is stronger and less ductile than both microstructures A and B. /  
 Dit is martensiet - dit is sterker en minder rekbaar as beide mikrostrukture A en B.

Answer

It is bainite - it is weaker and more ductile than both microstructures A and B. /  
 Dit is baniet -  dit is swakker en meer rekbaar as beide mikrostrukture A en B.

Answer

It is bainite - it is stronger and less ductile than both microstructures A and B. /  
 Dit is baniet - dit is sterker en minder rekbaar as beide mikrostrukture A en B.

Answer

It is martensite - it is weaker and more ductile than both microstructures A and B. /  
 Dit is martensiet - dit is swakker en meer rekbaar as beide mikrostrukture A en B.

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The optical micrograph below shows fine, needle-shaped grains of a eutectoid ste...

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