According to the text, what is the purpose of the heat treatment called tempering?
a) To increase the ductility and toughness of low carbon marte...
According to the text, what is the purpose of the heat treatment called tempering?
a) To increase the ductility and toughness of low carbon martensitic steels. b) To increase the hardness and mechanical strength of high carbon martensitic steels. c) To decrease the hardness and mechanical strength of high carbon martensitic steels. d) To decrease the ductility and toughness of low carbon martensitic steels.
De acordo com o texto, o objetivo do tratamento térmico chamado de revenimento (tempering) é aumentar a ductilidade e tenacidade de aços martensíticos de baixo carbono. Portanto, a alternativa correta é a letra a).
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