ISSN -
11th International Rolling Conference (IRC 2019) — vol. 11, num.11 (2019)
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In this work, we investigated the effect of the rolling process (warm-rolled or cold-rolled) on microstructure evolution and mechanical properties of 9Mn steel. After intercritical annealing at 670°C for 10min, both cold-rolled and warm-rolled microstructures are composed of ultra-fined austenite and intercritical ferrite. The austenite in warm-rolled sample includes two types of morphology, namely equiaxed and lamellar, which exhibits a wide distribution of grain-size. The incomplete recrystallization or recovery behavior of ferrite in warm-rolled and annealed sample results in higher yield strength and shorter yield point elongation. Moreover, the warm-rolled and annealed sample extends the TRIP-related work hardening over a broad strain range, resulting in a better combination of ultimate tensile strength and total elongation.
Palavras-chave
Warm-rolled; Cold-rolled; Microstructure evolution; Mechanical properties;
Como citar
Yan, Ning;
Di, Hongshuang;
Gong, Xihuai;
Li, Jianping;
Zhang, Dianhua.
EFFECT OF ROLLING PROCESS ON THE MICROSTRUCTURE EVOLUTION AND MECHANICAL PROPERTIES OF 9MN STEEL PAPER TITLE
,
p. 205-212.
In: 11th International Rolling Conference (IRC 2019),
São Paulo,
2019.
ISSN: -
, DOI 10.5151/9785-9785-32235
