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材料工程  2014, Vol. 0 Issue (11): 73-78    DOI: 10.11868/j.issn.1001-4381.2014.11.013
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
时效温度对0Cr17Ni4Cu4Nb钢组织及力学性能的影响
胡春燕1,2, 刘新灵1,2, 陶春虎1,2
1. 北京航空材料研究院, 北京 100095;
2. 航空材料检测与评价北京市重点实验室, 北京 100095
Effect of Aging Temperature on Microstructure and Mechanical Properties of Steel 0Cr17Ni4Cu4Nb
HU Chun-yan1,2, LIU Xin-ling1,2, TAO Chun-hu1,2
1. Beijing Institute of Aeronautical Materials, Beijing 100095, China;
2. Beijing Key Laboratory of Aeronautical Materials Testing and Evaluation, Beijing 100095, China
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摘要 以0Cr17Ni4Cu4Nb马氏体沉淀硬化不锈钢为研究对象,分析了不同时效温度对其显微组织和力学性能的影响,并对试样断口特征进行了观察分析。结果表明:随着时效温度的升高(480~550℃),材料的抗拉强度σb和屈服强度σ呈逐渐下降的趋势,而材料的断面收缩率Ψ和伸长率δ5呈逐渐上升的趋势;材料的冲击韧性a 受时效温度的影响比较明显,呈逐渐上升的趋势,其中在550℃时a达到213.4(J·cm-2)。同时由断口观察分析结果显示,时效温度为550℃时拉伸断口的放射区最小,其塑性最好;冲击断口塑性变形最为明显,纤维区和剪切唇区所占的比例最大。0Cr17Ni4Cu4Nb不锈钢随着时效温度的升高,淬火马氏体基体开始回复、再结晶,逆转变奥氏体开始生成并长大,导致材料中的残余奥氏体含量增加,而残余奥氏体的存在有利于0Cr17Ni4Cu4Nb不锈钢保持良好的塑性和韧性。kukup0.2
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胡春燕
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陶春虎
关键词 0Cr17Ni4Cu4Nb钢时效温度马氏体组织力学性能    
Abstract:Based on 0Cr17Ni4Cu4Nb martensite precipitation hardening stainless steel, the effect of aging temperature on the microstructure and mechanical properties was analyzed and the fracture feature of sample was observed. The experimental results indicate that as the aging temperature goes up(480-550℃), the tensile strength σb and the yield strength σ show the tendency of gradually decreasing, while the fracture shrinkage Ψ and elongation rate δ5 exhibit the tendency of gradually increasing; the impact toughness a is affected obviously by the aging temperature, is gradually increasing, among which, at 550℃, areaches 213.4(J·cm-2). While, the analysis results from fracture observation show that when the aging temperature is at 550℃, the radiation zone of tensile fracture is the minimum, the plasticity is the best; impact fracture plastic deformation is most obvious, the shear lip zone and fibrous zone occupy the largest proportion. For 0Cr17Ni4Cu4Nb stainless steel, as the aging temperature rises, quenching martensite matrix begins to restore, recrystallize, reverse austensite starts to form and grow, resulting in the increase of content of residual austenite, while the existing of residual austenite is conducive to maintain excellent plastic property and the toughness.ku kup0.2
Key wordssteel 0Cr17Ni4Cu4Nb    aging temperature    martensite microstructure    mechanical property
收稿日期: 2013-05-13      出版日期: 2014-11-20
1:  TG161  
基金资助:中航工业航材院益材青年基金(YF53110738)
通讯作者: 胡春燕(1983-), 女, 博士研究生, 工程师, 现从事金属材料失效分析及安全评估等方面的研究, 联系地址:北京市81信箱4分箱(100095).     E-mail: fachcy@163.com
引用本文:   
胡春燕, 刘新灵, 陶春虎. 时效温度对0Cr17Ni4Cu4Nb钢组织及力学性能的影响[J]. 材料工程, 2014, 0(11): 73-78.
HU Chun-yan, LIU Xin-ling, TAO Chun-hu. Effect of Aging Temperature on Microstructure and Mechanical Properties of Steel 0Cr17Ni4Cu4Nb. Journal of Materials Engineering, 2014, 0(11): 73-78.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2014.11.013      或      http://jme.biam.ac.cn/CN/Y2014/V0/I11/73
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