含钒高速车轮钢第二相析出的热力学研究

丁小明; 李丰; 郭晓培; 李涛; 琚立颖; 宋晓辉

doi:10.7513/j.issn.1004-7638.2024.01.023

含钒高速车轮钢第二相析出的热力学研究

doi: 10.7513/j.issn.1004-7638.2024.01.023

丁小明^{1, 2,},
李丰^3,,
郭晓培⁴,
李涛^3, ,,
琚立颖³,
宋晓辉²

1.
中国航发北京航空材料研究院, 北京 100083
2.
航材国创(青岛)高铁材料研究院有限公司, 山东青岛266109
3.
华北理工大学冶金与能源学院, 河北唐山063210
4.
重庆大学材料科学与工程学院, 重庆 400044

基金项目: 高铁车轮钢中复相夹杂物调控研究项目；河北省杰出青年科学基金（E2021209039）；2021年度河北省引进留学人员资助项目（C20210309）；唐山市科技创新团队培养计划项目（21130209D）。

详细信息

作者简介:
丁小明，1987年出生，男，硕士，高级工程师，主要从事金属加工及热处理研究，E-mail：ding_1121@163.com

通讯作者:
李涛，1984年出生，男，博士，教授，主要从事钢中夹杂物三维表征及相关研究，E-mail：litao@ncst.edu.cn

中图分类号: TF76
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- 被引次数: 0
出版历程
- 收稿日期: 2022-10-25
- 刊出日期: 2024-02-29

Thermodynamic behaviour of second phases precipitation in vanadium-bearing high-speed steel for railway wheel

Ding Xiaoming^{1, 2
,},
Li Feng^3
,,
Guo Xiaopei⁴,
Li Tao^{3
, ,},
Ju Liying³,
Song Xiaohui²

1.
Beijing Institute of Aeronautical Materials, Beijing 100083, China
2.
National Innovation (Qingdao) High Speed Train Material Research Institute Co. Ltd., Qingdao 266109 , Shandong, China
3.
College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063210, Hebei, China
4.
College of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

摘要

摘要: 利用热力学软件Thermo-calc计算了含钒高速铁路车轮钢中第二相的析出行为，详细分析了低碳车轮钢中平衡相的组成以及温度和钒含量对第二相析出的影响。结果表明，钢中钒含量的变化对车轮钢中第二相析出量有较大影响，对第二相析出的温度几乎无影响；温度变化对钢中稳定存在的第二相析出产物影响较小，对瞬态析出相的影响较大。
- 含钒高速车轮钢 /
- 第二相 /
- 析出 /
- 热力学
Abstract: A thermodynamic Thermo-calc software was used to calculate the precipitation behavior of second phase in vanadium-bearing high-speed railway wheel steel. The composition of equilibrium phase in low-carbon wheel steel and the influence of temperature and vanadium content on the precipitation of the second phase were analyzed in detail. The results show that variation of vanadium content in steel has a great influence on the second phase precipitation in wheel steel, and almost no effect has been observed on the precipitated temperature of the second phase. The temperature variation has small effect on the stable second phase precipitated products in steel, but has great effect on the transient precipitated phase.
- vanadium-bearing high speed wheel steel /
- the second phase /
- precipitation /
- thermodynamics

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图 1 试验钢平衡析出相图

Figure 1. Equilibrium diagram of precipitation in high-speed wheel steel

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图 2 车轮钢中各析出相的组成与温度的关系

Figure 2. The relationship between the composition of each precipitated phase and temperature in wheel steel

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图 3 析出相中钒和钼的质量

(a) 钒在各析出相中的质量；(b) 钼在各析出相中的质量； (c) 钒和钼在MC_ETA相中的质量

Figure 3. Mass fraction of V and Mo in precipitated phase

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图 4 钒含量对主要析出相的影响

Figure 4. Effect of V content on main precipitates

(a) AlN; (b) FCC_A1#2; (c) MC_ETA; (d) M7C3

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表 1 高速车轮钢主要化学成分

Table 1. Main chemical composition of high-speed wheel steel %

C	Si	Mn	Mo	Ni	V	Cr	S	P	Al	O	N
0.2	1.2	1.91	0.5	0.24	0.03~0.12	0.03	0.006	0.019	0.04	0.0001	0.004

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表 2 试验钢中第二相粒子平衡析出结果

Table 2. The equilibrium precipitation of the second phases in high-speed wheel steel

第二析出相	最大质量分数	最大析出温度/ ℃	析出温度/ ℃	分解温度/ ℃
MnS	1.63×10⁻⁴	-	1362.52	-
AlN	1.46×10⁻⁴	-	1184.86	-
FCC_A1#2	1.55×10⁻⁴	803.02	826.79	801.63
MC_ETA	9.26×10⁻⁴	688.92	803.02	-
M6C	4.71×10⁻³	653.13	780.00	400.00
KSI_CARBIDE	1.33×10⁻³	688.92	702.00	687.26
CEMENTITE	2.44×10⁻²	669.52	688.91	564.62
MC_SHP	4.11×10⁻³	565.44	653.13	392.26
M7C3	2.05×10⁻²	416.35	565.30	-
HCP_A3#2	7.44×10⁻³	-	416.35	-
M3P	1.15×10⁻³	-	359.95
注:二次相析出的计算温度范围为200～1600 ℃。“-”表示在计算温度范围内无法分解析出相或连续析出至200 ℃。

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表 3 810 ℃时不同钒含量下FCC_A1#2相的含量和元素分布

Table 3. Content and element distribution of the FCC_A1#2 phase at 810 ℃ with different V contents

钢中V含量/%	FCC_A1#2	Mo/%	V/%	C/%	N/%
0.04	1.55×10⁻⁴	16.78	61.77	15.07	0.62
0.08	7.94×10⁻⁴	16.20	62.42	15.10	0.66
0.12	1.43×10⁻³	15.48	63.04	15.12	0.69

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表 4 不同钒含量下相关相的析出温度

Table 4. The precipitation temperature of the related phase with different contents of V

钢中V含量/%	析出温度/℃
钢中V含量/%	AlN	MC_ETA	FCC_A1#2	M7C3
0.04	1114.86	807.10	820.97	566.01
0.08	1113.90	804.01	883.87	569.05
0.12	1112.93	802.11	932.01	572.14

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