CAJ | 학술논문

马氏体时效钢(250级)多用于要求高的强度/重量比及良好韧性的场合.这种钢属于高强度钢,达到了常用工程合金所能获得的最高的强度与韧性的结合.表面处理可能是改善这种钢的耐磨性的有效途径.渗硼是使硼渗入金属或合金的表面从而形成金属硼化物的表面化学热处理工艺,既能提高工程零件的表面性能,又不影响基体性能,是一种具有良好发展前景的工艺方法.本文对马氏体时效钢(250级)进行了盐浴渗硼,获得了高硬度的表面层.这种钢经渗硼处理后,其耐磨性能比未经渗硼的有了明显的改善.
마씨체시효강(250급)다용우요구고적강도/중량비급량호인성적장합.저충강속우고강도강,체도료상용공정합금소능획득적최고적강도여인성적결합.표면처리가능시개선저충강적내마성적유효도경.삼붕시사붕삼입금속혹합금적표면종이형성금속붕화물적표면화학열처리공예,기능제고공정령건적표면성능,우불영향기체성능,시일충구유량호발전전경적공예방법.본문대마씨체시효강(250급)진행료염욕삼붕,획득료고경도적표면층.저충강경삼붕처리후,기내마성능비미경삼붕적유료명현적개선.
Maraging steel (250 Grade) are used in applications where high strength/weight ratio,associated with good toughness,are necessary.These steels belong to the class of high strength steels,with a combination of strength and toughness that are among the highest attainable by the general engineering alloys.Surface treatments can be an efficient way to improve the wear resistance of this kind of steels.Boronizing is a thermo-chemical surface treatment that utilizes boron diffusion into the surface of metals and alloys to produce metallic borides,being a promising method of increasing the surface performance of engineering components while preserving the substrate properties.In this work,a maraging steel (250 grade) was borided using the salt bath method,what produced a high hardness surface layer.After boronizing,a great increase in wear resistance of this steel,in comparison with un-borided condition was verified.