镍基耐蚀合金扩散均匀化处理及组织性能演变

doi:10.3969/j.issn.1671-7775.2009.01.008

摘要
图/表
参考文献
相关文章 (0)

全文: PDF (293 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要基于三维扩散理论，对所研制的Ni—Cr—Mo—Cu铸态合金的均匀化、固溶处理工艺的有效性，以及对其显微组织、力学性能和耐蚀性能的演变进行了试验研究．研究结果表明：手工电弧炉熔炼、真空感应炉熔炼和真空自耗电极炉熔炼得到比较粗大的铸态组织（分别为约20μm的胞状结构、间距80～100μm的粗大树枝晶和60～80μm的方向性树枝晶），经1140～1170℃，2．5h的处理后，其胞状或枝晶组织消失、偏析组织达到均匀化．与铸态舍金相比，固溶状态合金在4种典型介质中的耐蚀性都获得提高（15％～25％以上），硬度、强度提高近30％；在盐酸、混合酸和FeCl，溶液中Ni—Cr—Mo—Cu合金的耐蚀性比1Cr18Ni9Ti奥氏体不锈钢提高1～3个数量级．通过扩散方程傅里叶级数解的分析，导得适合该耐蚀合金固溶处理时间的半经验公式．

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	杨瑞成
	牛绍蕊
	王凯旋

关键词 ：镍基耐蚀合金')" href="#">镍基耐蚀合金, 均匀化')" href="#"> 均匀化, 耐蚀性')" href="#"> 耐蚀性, 力学性能')" href="#"> 力学性能, 傅里叶级数解')" href="#"> 傅里叶级数解

Abstract：Using three-dimensional diffusion theory, the homogenization treatment of newly-developed as-cast Ni - Cr - Mo - Cu alloys and evolutions of its microstructure and properties were studied. The results showed that the coarser as-cast microstructures from three melting methods, hand-arc furnace（fine cellular structures about 20 μm cell size）, vacuum induction furnace （coarse dendritic structures about 80 100 μm spacing）and consumable electrode vacuum arc furnace（ well-developed directional dendrites about 60 - 80 μm spacing） , all disappeared and segregated mierostruetures were homogenized after solution treatment at 1 140 - 1 170 ℃ for 2.5 h. Compared with the as-cast alloys, the corrosion resistance of the as-solution alloys in four kinds of typical corrosive agents was improved （ above 15% - 25% ）. Both hardness and strength were increased by about 30%. The present Ni - Cr - Mo - Cu alloy has excellent corrosion resistant ability, especially in FeCl3 and HCl solutions, about 2 - 3 orders as high as 1Cr18Ni9Ti. Through analysis of the Fourier series solution for diffusion equation, the semi-experiential formula of solution treating time was derived for the as-cast Ni - Cr - Mo - Cu alloys.

Key words： nickel alloys')" href="#">nickel alloys homogenization method')" href="#">homogenization method corrosion resistance ')" href="#">corrosion resistance mechanical properties')" href="#">mechanical properties Fourier analysis')" href="#"> Fourier analysis

基金资助:

甘肃省有色金属新材料省部共建国家重点实验室基金资助项目（SKL05011）

引用本文:

杨瑞成, 牛绍蕊, 王凯旋. 镍基耐蚀合金扩散均匀化处理及组织性能演变[J]. 江苏大学学报（自然科学版）, 2009, 30(1): 32-35. Yang Ruicheng, Niu Shaorui, Wang Kaixuan. Diffusional homogenization treatment of Ni - Cr - Mo - Cu corrosion resistance alloy and evolutions of its microstructure and properties[J]. Journal of Jiangsu University(Natural Science Eidtion) , 2009, 30(1): 32-35.

链接本文:

http://zzs.ujs.edu.cn/xbzkb/CN/10.3969/j.issn.1671-7775.2009.01.008 或 http://zzs.ujs.edu.cn/xbzkb/CN/Y2009/V30/I1/32