Influence of carbon diffusion on microstructure and wear behaviour of duplex stainless steel surface layers on lamellar grey cast iron
Influence of carbon diffusion on microstructure and wear behaviour of duplex stainless steel surface layers on lamellar grey cast iron
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碳扩散对片状灰铸铁双相不锈钢表层组织及磨损行为的影响
DOI：
10.1002/mawe.201900129
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发表时间：
2019
影响因子：
1.1
通讯作者：
E. González Olivares
中科院分区：
文献类型：
--
作者：
B. Heider;M. Oechsner;T. Engler;J. Ellermeier;U. Reisgen;R. Sharma;E. Zokoll;E. González Olivares
采用双相不锈钢进行表面焊接，以提高灰铸铁的磨损和腐蚀性能，灰铸铁用作海洋和化学环境中泵部件的材料。用于表面焊接的方法和相应的工艺参数决定了化学成分和显微组织，这两者决定了表面层的腐蚀和磨损性能。高的热输入导致高的化学稀释，从而降低耐腐蚀性。灰铸铁部件焊接时建议采用缓慢的冷却速度，这有助于富铬双相不锈钢表面层熔合区中碳化物的形成。一方面，碳化物导致硬度增加，从而提高表面层的耐磨性。另一方面，碳化物和高化学稀释率会降低耐腐蚀性，因此应避免。在高冷却速率下，由于马氏体相变，灰铸铁的热影响区中的开裂风险增加。本文描述了工艺参数、显微组织和化学成分之间的相关性，重点是碳扩散和碳化物形成，同时考虑了在振荡摩擦试验机和侵蚀腐蚀条件下对磨损行为的影响。
Surface welding with duplex stainless steel was performed to enhance the wear and corrosion properties of grey cast iron, which is used as material for applications as pump components in maritime and chemical environments. The method used for surface welding and the corresponding process parameters determine the chemical composition and microstructure, which both determine the corrosion and wear properties of the surface layer. High heat input leads to high chemical dilution and thus, reduced corrosion resistance. Slow cooling rates, which are recommended for welding of grey cast iron components, facilitate the formation of carbides in the fusion zone of the chromium‐rich duplex stainless steel surface layer. On the one hand, carbides lead to increased hardness and thus, improved wear resistance of the surface layers. On the other hand, carbides and high chemical dilution rates reduce the corrosion resistance and therefore should be avoided. Under high cooling rates, the risk of cracking in the heat affected zone of the grey cast iron increases due to martensitic phase transformations. The paper describes the correlation of process parameters, microstructure and chemical composition with a focus on carbon diffusion and carbide formation, ever considering the effect on the wear behaviour in an oscillation tribometer and under erosion‐corrosion conditions.
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影响因子：
1.1
作者：
U. Reisgen;Rahul Sharma;Stephan Wieland;Erick Gonzalez;Matthias Oechsner;G. Andersohn;J. Ellermeier;Marius Siebers;B. Heider
通讯作者：
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DOI：
--
发表时间：
2010
期刊：
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作者：
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DOI：
--
发表时间：
2017
期刊：
影响因子：
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作者：
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影响因子：
0.8
作者：
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