(1. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009,
Hebei, China;2. Hebei University of Science and Technology, Shijiazhuang 050018, Hebei, China;3. Analytical
and Testing Research Center, North China University of Science and Technology, Tangshan 063009, Hebei, China)
Abstract:Oxide metallurgy, as a domain research in recent years on how to take the most advantage of the nonmetal inclusions, is one of the effective methods to refine the microstructure of steel by using high melting particles, and then to refine the welding performance in HAZ in steel plate. Relied on DH36 shipbuilding steel, guided by the twodimensional disregistry method, on the basis of the laboratory test of the composite microalloying Nb and V, different impacts in inducing intragranular acicular ferrite in the ingots microstructure of the shipbuilding steel had been systematic researched, it showed based on the twodimensional disregistry method, the carbonitride in the microalloy V in the steel was much easier to induce IAF nucleation than that in the Nb. But the precipitation temperature of the carbonitride in the microalloy V was lower while the quantity of the carbonitride in the Nb was higher than that in the V. Therefore microalloy element Nb can optimize the castingstate structure effectively and improve the welding toughness of HAZ, and the low temperature performance was 4 times than V. The results were of great significance to the modification and improvement of the existing theory of oxide metallurgy.
朱立光,王雁,王硕明,张庆军. 微合金元素钒和铌对诱发针状铁素体的影响[J]. 钢铁, 2019, 54(8): 216-223.
ZHU Liguang, WANG Yan, WANG Shuoming, ZHANG Qingjun. Effect of microalloy elements V and Nb on induction of #br# intragranular acicular ferrite. Iron and Steel, 2019, 54(8): 216-223.