Decomposition of Supercooled Austenite in Low-Carbon Pipe Steel
- 作者: Poletskov P.1, Denisov S.1, Nikitenko O.1, Chukin D.1, Gushchina M.1
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隶属关系:
- Nosov Magnitogorsk State Technical University
- 期: 卷 49, 编号 3 (2019)
- 页面: 174-178
- 栏目: Article
- URL: https://journals.rcsi.science/0967-0912/article/view/180481
- DOI: https://doi.org/10.3103/S0967091219030094
- ID: 180481
如何引用文章
详细
Controlled rolling may facilitate the transition from ferrite–pearlite structure to bainite structure and hence improve the strength of low-carbon alloy steel. A literature review shows the lack of detailed research regarding the type of bainite structure that ensures optimal properties of low-carbon alloy steel. To determine the temperature, time, and other parameters of treatment to produce such structure, it is expedient to establish the influence of the cooling rate on the structure and properties of low-carbon alloy steel. In the present work, we investigate the decomposition of supercooled austenite in low-carbon alloy pipe steel with 0.062% C, 1.80% Mn, 0.120% Mo, 0.032% Cr, 0.90% Ni, and other elements (Al, Cu, V, Nb, Ti). The treatment conditions producing bainite structure with elevated steel are determined for such steel. At low cooling rates (no more than 6°C/s), not only ferrite is formed in the microstructure but also granular (or globular) bainite consisting of bainitic α phase and an insular martensite–austenite component (1–6 μm). At a rate of 6°C/s, transition to rack bainite is observed; around the boundaries of the racks, carbides and residual austenite are seen. At cooling rates above 16°C/s, the bainite has packet–rack structure, Between 50 and 150°C/s, the mean rack width of the bainitic α phase declines from 2.24 to 1.32 μm.
作者简介
P. Poletskov
Nosov Magnitogorsk State Technical University
Email: olganikitenko@list.ru
俄罗斯联邦, Magnitogorsk, 455000
S. Denisov
Nosov Magnitogorsk State Technical University
Email: olganikitenko@list.ru
俄罗斯联邦, Magnitogorsk, 455000
O. Nikitenko
Nosov Magnitogorsk State Technical University
编辑信件的主要联系方式.
Email: olganikitenko@list.ru
俄罗斯联邦, Magnitogorsk, 455000
D. Chukin
Nosov Magnitogorsk State Technical University
Email: olganikitenko@list.ru
俄罗斯联邦, Magnitogorsk, 455000
M. Gushchina
Nosov Magnitogorsk State Technical University
Email: olganikitenko@list.ru
俄罗斯联邦, Magnitogorsk, 455000