Iron-based shape memory alloys are the materials that can be especially used in civil engineering structures and pipe coupling because of their good mechanical properties and their low price compared with Ni-Ti and cooper-based alloys. However, their applications have been remained limited so it is very important to determine the wear behaviours of this family of materials. This paper presents friction and wears behaviours of Fe-14Mn-9Cr-5Ni-6Si and Fe-13Cr-12Co-8Mn-6Ni-6Si under both dry and lubricated conditions by means of reciprocating ball-on-flat tribometer. The aim of this study is to determine the influence of chemical composition of iron-based shape memory alloys on tribological behaviours of material and compare their behaviours with that of Fe-32Mn-6Si which is considered as a basis reference. Morphologies and microstructures of specimens have been characterized by optical microscope. The wear tests and the optical micrograph observations of studied alloys have shown that the tribological behaviors of shape memory alloys depend on the chemical composition of material which is mainly influenced by the presence of nickel, chromium and cobalt in material. The results have shown that friction coefficients of Fe-14Mn-9Cr-5Ni-6Si and Fe-13Cr-12Co-8Mn-6Ni-6Si are almost equal and less than of Fe-32Mn-6Si. Moreover, the addition of cobalt in the chemical composition of shape memory alloys reduces considerably the stick-slip phenomenon. It has been also shown that wear resistance of alloys in oily friction is higher than that in dry friction.

中文翻译：

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Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si形状记忆合金的摩擦磨损性能

铁基形状记忆合金是一种特别可用于土木工程结构和管接头的材料，因为与Ni-Ti和库珀基合金相比，它们的机械性能好且价格低廉。但是，它们的应用仍然受到限制，因此确定该系列材料的磨损行为非常重要。本文介绍了往复式平面球式摩擦计在干燥和润滑条件下Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦磨损性能。这项研究的目的是确定铁基形状记忆合金的化学成分对材料的摩擦学行为的影响，并将其行为与作为基础参考材料的Fe-32Mn-6Si进行比较。样品的形貌和微观结构已通过光学显微镜表征。所研究合金的磨损测试和光学显微观察表明，形状记忆合金的摩擦学性能取决于材料的化学组成，而材料的化学组成主要受材料中镍，铬和钴的存在的影响。结果表明，Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦系数几乎相等，小于Fe-32Mn-6Si。此外，在形状记忆合金的化学组​​成中添加钴可大大减少粘滑现象。还已经表明，在油性摩擦中合金的耐磨性高于在干摩擦中的耐磨性。所研究合金的磨损测试和光学显微观察表明，形状记忆合金的摩擦学性能取决于材料的化学组成，而材料的化学组成主要受材料中镍，铬和钴的存在的影响。结果表明，Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦系数几乎相等，小于Fe-32Mn-6Si。此外，在形状记忆合金的化学组​​成中添加钴可大大减少粘滑现象。还已经表明，在油性摩擦中合金的耐磨性高于在干摩擦中的耐磨性。所研究合金的磨损测试和光学显微观察表明，形状记忆合金的摩擦学行为取决于材料的化学组成，而化学成分主要受材料中镍，铬和钴的存在的影响。结果表明，Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦系数几乎相等，小于Fe-32Mn-6Si。此外，在形状记忆合金的化学组​​成中添加钴可大大减少粘滑现象。还已经表明，在油性摩擦中合金的耐磨性高于在干摩擦中的耐磨性。铬和钴的材料。结果表明，Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦系数几乎相等，小于Fe-32Mn-6Si。此外，在形状记忆合金的化学组​​成中添加钴可大大减少粘滑现象。还已经表明，在油性摩擦中合金的耐磨性高于在干摩擦中的耐磨性。铬和钴的材料。结果表明，Fe-14Mn-9Cr-5Ni-6Si和Fe-13Cr-12Co-8Mn-6Ni-6Si的摩擦系数几乎相等，小于Fe-32Mn-6Si。此外，在形状记忆合金的化学组​​成中添加钴可大大减少粘滑现象。还已经表明，在油性摩擦中合金的耐磨性高于在干摩擦中的耐磨性。