形变及冷却条件对35钢铁素体组织的影响
陈其安
中国钢研科技集团公司
The Characteristics of Ferrite Structure after Deformation of Austenite in Steel 35
陈其安 Chen Qi`an
摘要 摘 要:利用热模拟单道次压缩形变试验研究了35钢在临界奥氏体(Ae3~Ar3)区形变后铁素体组织的变化规律。结果表明,形变后水淬,小形变时铁素体首先在原奥氏体晶粒的界隅和晶界上形核,随着形变温度的降低和形变量的增大,原奥氏体内部出现大量细小、等轴的铁素体。在此温度区间形变后缓慢冷却,能够得到超平衡数量(共析转变温度的铁素体转变量)的铁素体,并且随形变温度的降低和形变量的增大,铁素体晶粒明显细化和等轴化。当形变温度降到690℃(Ar3附近),形变量0.92时,铁素体晶粒细化到2-4μm,体积百分数达到76.86%。
Abstract :ABSTRACT: The ferrite structure evolution of undercooled austenite(Ae3~Ar3)of steel 35 after deformation has been investigated by means of hot compression simulation experiment. It shows that the fine-grain ferrite forms along the austenite boundaries under the condition of small deformation after water quenching. There are also smaller ferrite grains in intragranular position with the decreasing deformation temperature and the increasing strain. The over-equilibrium amount of ferrite can be obtained by deformation and subsequently slow cooling among the above mentioned temperature range. The ferrite grain size is fined to 2-4μm and the volume fraction is reach 76.86% after heavy deformation (0.92) under lower temperature (690℃).
收稿日期: 2008-09-18
[1]
Jun Zhao, Hai-bin Zuo, Chao Ling, Wen-tao Guo, Jing-song Wang, Qing-guo Xue. Microstructure evolution of coke under CO2 and H2 O atmospheres [J]. 钢铁研究学报(英文版), 2020, 27(7): 743-754.
[2]
Sheng-li Wu, Xiao-bo Zhai, Li-xin Su, Xu-dong Ma. Ore-blending optimization for Canadian iron concentrate during iron ore sintering based on high-temperature characteristics of fines and nuclei [J]. 钢铁研究学报(英文版), 2020, 27(7): 755-769.
[3]
Feng Zhang, De-qing Zhu, Jian Pan, Zheng-qi Guo, Meng-jie Xu. Improving roasting performance and consolidation of pellets made of ultrafine and super high grade magnetite concentrates by modifying basicity [J]. 钢铁研究学报(英文版), 2020, 27(7): 770-781.
[4]
Da‑peng Li, Hua‑zhang Wu, Hai‑feng Wang, Hong Li. Growth of solidified shell in bloom continuous casting mold of hypo-peritectic steel based on a FeS tracer method [J]. 钢铁研究学报(英文版), 2020, 27(7): 782-787.
[5]
Jie Yang, Deng‑fu Chen, Miao‑yong Zhu. Crystallization and heat transfer of CaO–SiO2 -based slag for high-Mn–high-Al steel [J]. 钢铁研究学报(英文版), 2020, 27(7): 788-795.
[6]
Ping‑guo Jiang, Jin‑sheng Liu, Yi‑yu Xiao, Xiao‑heng Tan, Wen‑jie Liu. Recovery of iron from copper slag via modified roasting in CO–CO2 mixed gas and magnetic separation [J]. 钢铁研究学报(英文版), 2020, 27(7): 796-806.
[7]
Hai Wang, Dong Liu, Jian‑guo Wang, Hai‑ping Wang, Yang Hu, Hao‑dong Rao. Characterization of hot deformation behavior of 30Si2MnCrMoVE low-alloying ultra-high-strength steel by constitutive equations and processing maps [J]. 钢铁研究学报(英文版), 2020, 27(7): 807-819.
[8]
Chen Dong, Zheng‑dong Liu, Zheng‑zong Chen, Zhen Liu, Jia‑zhuang Zheng, Xi‑tao Wang. Hot deformation behavior of a heat-resistant alloy without γ′-phase [J]. 钢铁研究学报(英文版), 2020, 27(7): 820-833.
[9]
Jia‑jia Qiu, Min Zhang, Gu‑hui Gao, Zhun‑li Tan, Bing‑zhe Bai. Research and modeling on correlation among microstructure, yield strength and process of bainite/martensite steel [J]. 钢铁研究学报(英文版), 2020, 27(7): 834-841.
[10]
Xiao‑hui Chen, Bo Chen, Xu Cheng, Guo‑chao Li, Zheng Huang. Microstructure and properties of hybrid additive manufacturing 316L component by directed energy deposition and laser remelting [J]. 钢铁研究学报(英文版), 2020, 27(7): 842-848.
[11]
Huan Lin, Mao‑sheng Yang, Bai‑po Shu. Fretting wear behaviour of high-nitrogen stainless bearing steel under lubrication condition [J]. 钢铁研究学报(英文版), 2020, 27(7): 849-866.
[12]
Rui‑wu Li, Zheng Zhang, Jian‑wei Li, Ke‑xin Ma, Yuan‑yuan Guo, Yan‑wen Zhou, Fa‑yu Wu. Surface modification of 316L stainless steel by diamond-like carbon films [J]. 钢铁研究学报(英文版), 2020, 27(7): 867-874.
[13]
He‑ping Li, Sheng‑li Wu, Zhi‑bin Hong, Heng Zhou, Ming‑yin Kou. Development and application of coke oven gas spraying on sinter bed [J]. 钢铁研究学报(英文版), 2020, 27(6): 617-623.
[14]
Xin Jiang, Huai‑yu Zhang, Hai‑yan Zheng, Qiang‑jian Gao, Feng‑man Shen. Three-segment control theory of MgO/Al2 O3 ratio based on viscosity experiments and phase diagram analyses at 1500 °C [J]. 钢铁研究学报(英文版), 2020, 27(6): 624-630.
[15]
Qing‑song Zhang, Yi Min, Jiu‑jian Xu, Cheng‑jun Liu. Formation and evolution behavior of inclusions in Al-killed resulfurized free-cutting steel with magnesium treatment [J]. 钢铁研究学报(英文版), 2020, 27(6): 631-642.