为研究低碳贝氏体钢在热处理后的力学、腐蚀疲劳性能,采用扫描电子显微镜、透射电镜、X射线衍射分析研究了一种新型贝氏体钢力学性能,并在自来水和盐水腐蚀介质中研究了其腐蚀疲劳性能.结果表明：与轧材比较,A、B、C钢轧材经正火回火热处理后,表现出更优异的综合力学性能和抗腐蚀疲劳性能;而含Si高的A钢具有更优异的韧塑性及抗腐蚀疲劳性能.含Si的贝氏体钢中的贝氏体铁素体（BF）板条间残余奥氏体（Ar）膜对氢致裂纹的扩展速率有突出的抑制作用.
The mechanical properties and corrosion fatigue properties of low carbon bainite steel after heat treatment under water and salt water conditions were investigated by scanning electron microscopy(SEM),transmission electron microscope(TEM) and X-ray diffractometer(XRD).The results indicated that,compared with as-rolled specimens,A,B,C steel after heat treatment showed more excellent toughness and ductility mechanical properties.Additionally,specimen of A with more silicon content showed superior mechanical properties and corrosion fatigue performance which was attributed to more retained austenite(Ar) between bainite ferrites(BF) reducing the propagation rate of Hydrogen induced crack.
参考文献
| [1] | 崔雷,杨善武,王树涛,高克玮,贺信莱.锈层损伤对低碳贝氏体钢在含Cl-环境中腐蚀行为的影响[J].金属学报,2009(04):442-449. |
| [2] | 董杰,崔文芳,张思勋,刘春明.海洋工程用超低碳贝氏体钢力学性能和海水腐蚀行为[J].材料热处理学报,2008(03):99-103. |
| [3] | 王树涛,杨善武,高克玮,沈晓安,贺信莱.新型低碳贝氏体钢在含氯离子环境中的腐蚀行为和表观力学性能的变化[J].金属学报,2008(09):1116-1124. |
| [4] | 黄维刚,方鸿生,郑燕康.C-Si-Mn-B贝氏体钢的疲劳裂纹扩展特性[J].金属学报,2001(09):927-931. |
| [5] | 程巨强,刘志学,王元辉.新型贝氏体钢的组织和冲击疲劳性能研究[J].材料工程,2006(12):8-10,15. |
| [6] | 陈美英,牛康民.GC-4高强钢腐蚀疲劳裂纹扩展的研究[J].航空材料学报,1990(z1):44. |
| [7] | 王六定,朱明,陈景东,施易军,陈国栋.低碳超高强度贝氏体钢的组织细化[J].材料热处理学报,2007(05):42-45. |
| [8] | 陈祥,李言祥.高硅铸钢残余奥氏体分布形态及其对力学性能的影响[J].金属学报,2007(03):235-239. |
| [9] | 高宽,王六定,朱明,陈景东,施易军,康沫狂.低合金超高强度贝氏体钢的晶粒细化与韧性提高[J].金属学报,2007(03):315-320. |
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