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首页> 外文期刊>Journal of Materials Engineering and Performance >Study of the influence of phase composition and iron content on the formability characteristics of zinc-iron electroplated sheet steel
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Study of the influence of phase composition and iron content on the formability characteristics of zinc-iron electroplated sheet steel

机译：相组成和铁含量对锌铁电镀钢板成形性能影响的研究

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摘要

This study focuses on the relationship between coating composition and deformation and friction behavior of zinc-iron electroplated sheet steel. The influence of phase composition and microhardness of the deposits and the electrodeposition process parameters on the mechanical properties of the material were determined. The influence of coating composition on the friction and galling behavior was also investigated. Both V-bend test and cup test were used to evaluate the influence of the iron content on the powdering and flaking behavior of the deposits. Finally, the adhesion of the coating to the substrate was studied by lap shear tests. Although the soft η phase appears to be the main component in zinc-iron coatings with less than 16 wt% Fe, Γ{sub}1 particles were observed even at low iron contents. As the iron content in the coating increases, the Γ{sub}1 fraction increases and the coating becomes harder and more brittle. Above 16 wt% Fe the deposits start to show substantial powdering and flaking during deformation. At iron contents above 30 wt%, bending of the coated product results in total coating delamination. At low iron contents, zinc-iron electroplated sheet steel exhibits a superior deformation behavior, and both cup tests and flat die tests proved the suitability of the coating for deep drawing.
机译：本研究着重于锌铁电镀钢板的涂层成分与变形和摩擦性能之间的关系。确定了相组成和沉积物的显微硬度以及电沉积工艺参数对材料力学性能的影响。还研究了涂料组成对摩擦和磨损性能的影响。 V型弯曲试验和杯状试验均用于评估铁含量对沉积物的粉化和剥落行为的影响。最后，通过搭接剪切试验研究了涂层对基材的粘附性。尽管软η相似乎是含铁量少于16 wt％的锌铁涂层中的主要成分，但是即使在低铁含量下也观察到Γ{sub} 1颗粒。随着涂层中铁含量的增加，Γ{sub} 1分数增加，涂层变得更硬，更脆。铁含量超过16 wt％时，沉积物在变形过程中开始显示出大量的粉化和剥落。当铁含量高于30wt％时，涂覆产品的弯曲导致整个涂层分层。在低铁含量下，锌铁电镀钢板表现出优异的变形性能，杯子试验和平模试验均证明该涂层适用于深冲。

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