[1]倪自飞,孙扬善,薛烽.原位VC颗粒弥散强化304不锈钢的组织与性能[J].东南大学学报(自然科学版),2010,40(6):1308-1312.[doi:10.3969/j.issn.1001-0505.2010.06.034]
 Ni Zifei,Sun Yangshan,Xue Feng.Microstructure and properties of in-situ VC dispersion-reinforced 304 stainless steel[J].Journal of Southeast University (Natural Science Edition),2010,40(6):1308-1312.[doi:10.3969/j.issn.1001-0505.2010.06.034]
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原位VC颗粒弥散强化304不锈钢的组织与性能()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
40
期数:
2010年第6期
页码:
1308-1312
栏目:
材料科学与工程
出版日期:
2010-11-20

文章信息/Info

Title:
Microstructure and properties of in-situ VC dispersion-reinforced 304 stainless steel
作者:
倪自飞1 孙扬善12 薛烽12
1 东南大学材料科学与工程学院,南京 211189; 2 东南大学江苏省先进金属材料高技术研究重点实验室,南京 211189
Author(s):
Ni Zifei1 Sun Yangshan12 Xue Feng12
1 School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2 Jiangsu Key Laboratory for Advanced Metallic Materials, Southeast University, Nanjing 211189, China
关键词:
VC颗粒 弥散强化 显微组织 性能
Keywords:
VC particle dispersion-reinforced microstructure property
分类号:
TG142.1
DOI:
10.3969/j.issn.1001-0505.2010.06.034
摘要:
为了改善奥氏体不锈钢的力学性能,采用原位铸造法制备出VC颗粒弥散强化304不锈钢基材料,并研究了VC颗粒的加入对304不锈钢的显微组织和性能的影响.研究结果表明,原位VC颗粒在铸态组织中呈现2种形貌:沿晶界呈长条状分布的颗粒和在晶内均匀分布的亚微米尺寸的等轴状颗粒.TEM结果表明,在热处理过程中有纳米尺寸的VC颗粒析出.原位合成VC颗粒的加入,使304不锈钢的室温及高温强度均得到显著提高,但在一定程度上降低了其塑性和冲击韧性.与母合金304不锈钢相比,采用原位合成工艺引入VC颗粒后,在温度为 650℃、应力为100MPa的条件下,强化钢的抗蠕变性能得到大幅度改善.
Abstract:
In order to improve the mechanical properties of austenitic stainless steels, VC dispersion-reinforced 304 stainless steel is fabricated by in-situ reaction technology, and the effects of the VC particles on the microstructure and properties of the reinforced steel are investigated. The results show that the VC particles in the as-cast microstructures have two morphologies: long strip-shaped VC particles distributed along the grain boundaries and equiaxed submicron ones uniformly distributed in the matrix grains. The transmission electron microscope(TEM)results show that the VC nanoparticles precipitate during the heat treatment. The addition of the VC particles into the 304 stainless steel results in a significant increase of the tensile strength at both the room temperature and the high temperature, but a decrease of the ductility and the toughness. Compared with the 304 stainless steel matrix, the creep resistance of the 304 steel strengthened with the addition of the VC particles increases notably at the temperature of 650℃ and the applied stress of 100MPa.

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备注/Memo

备注/Memo:
作者简介: 倪自飞(1980—),男,博士生; 孙扬善(联系人),男,教授,博士生导师,yssun@seu.edu.cn.
引文格式: 倪自飞,孙扬善,薛烽.原位VC颗粒弥散强化304不锈钢的组织与性能[J].东南大学学报:自然科学版,2010,40(6):1308-1312. [doi:10.3969/j.issn.1001-0505.2010.06.034]
更新日期/Last Update: 2010-11-20