利用硫化物改善钢性能的应用研究进展

发布时间：2018-07-09 22:58

本文选题：硫化物 + 钢性能　；参考：《材料与冶金学报》2015年01期

【摘要】：硫一般被认为是钢中的有害元素;人们逐渐地认识到在某些钢中适当含量及合适形态的硫化物不但对钢性能无害反而能提高钢的某些性能.易切削钢中的MnS割断了基体的连续性而使车屑易断,从而减小了刀具的磨损,改善了钢材的切削性能;取向硅钢中MnS可作为重要抑制剂,能够有效地抑制晶粒长大;FeS、MoS2具有优异的润滑性能,可改善工具钢的耐磨性;硫氧复合化合物能诱导晶内铁素体形核,改善钢的焊接热影响区的韧性与强度;钢中析出的纳米硫化物粒子可以钉扎晶界、细化晶粒,并能起到一定的沉淀强化效果.进一步研究控制钢中硫化物的数量、形态、分布及其演变规律,对提升钢的性能、开发新的钢种具有重要意义.
[Abstract]:Sulfur is generally regarded as a harmful element in steel, and it has been gradually recognized that the proper content and form of sulfide in some steels is not only harmless to the properties of steel, but also can improve some properties of steel. MNS in free-cutting steel can cut the continuity of matrix and make the chip break easily, thus reducing the tool wear and improving the cutting performance of steel, MNS can be used as an important inhibitor in oriented silicon steel. It can effectively restrain the grain growth of FeS- MoS2 and improve the wear resistance of tool steel, and the compound of sulfur and oxygen can induce the nucleation of ferrite in the crystal and improve the toughness and strength of the HAZ of the steel. The precipitated nanocrystalline sulphide particles in the steel can be pinned to grain boundaries, grain refinement, and can play a certain precipitation strengthening effect. Further study on the quantity, shape, distribution and evolution of sulfides in steel is of great significance to the improvement of steel properties and the development of new types of steel.
【作者单位】：武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室;
【基金】：国家自然科学基金(50771075;51171133) 教育部新世纪人才(NECT-07-0650)
【分类号】：TG142.13

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