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首页> 外国专利> METHOD FOR PRODUCING WEAR-RESISTANT AND FATIGUE-RESISTANT EDGE LAYERS FROM TITANIUM ALLOYS, AND CORRESPONDINGLY PRODUCED COMPONENTS

METHOD FOR PRODUCING WEAR-RESISTANT AND FATIGUE-RESISTANT EDGE LAYERS FROM TITANIUM ALLOYS, AND CORRESPONDINGLY PRODUCED COMPONENTS

机译：用钛合金生产耐磨损和耐疲劳边缘层的方法及相应生产的部件

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The invention relates to edge layer finishing of functional components, and thereby in particular to a method for producing wear-resistant and fatigue-resistant edge layers in titanium alloys, and components produced therewith. The method according to the invention for producing wear-resistant and fatigue-resistant edge layers in titanium alloys by means of laser gas alloying is essentially characterized in that the laser gas alloying is carried out with a reaction gas that contains or releases interstitially soluble elements in the titanium alloy used, whereby the partial pressure of the reaction gas is selected such that the partial pressure remains below the threshold value above which nitride, carbide, or boride titanium phases are produced. The features according to the invention of the wear-resistant and fatigue-resistant component made of a titanium alloy with a gas-alloyed edge layer essentially are that the wear-resistant edge layer is composed of a fine-grain mixture of alpha- and beta-titanium grains with an interstitially dissolved reaction gas, has a surface hardness HSUBs/SUB, measured on the ground surface, of 360 HV0.5=HSUBs/SUB=500 HV0.5, or an edge layer microhardness HSUBR/SUB, measured on a polished cross section at 0.1 mm below the surface, of 360 HV0.1=HSUBR/SUB=560 HV0.1, extends over a depth tSUBR /SUBof 0.1 mm=TSUBR/SUB3.5 mm, and does not contain any nitride, carbide, oxide, or boride phases produced by the reaction gas.
机译：用于制造功能部件的边缘层的方法技术领域本发明涉及功能部件的边缘层的精加工，并且尤其涉及一种用于制造钛合金的耐磨且抗疲劳的边缘层的方法，以及由此制造的部件。根据本发明的用于通过激光气体合金化在钛合金中生产耐磨和抗疲劳边缘层的方法，其特征在于，激光气体合金化是通过一种反应气体进行的，该反应气体中含有或释放出可溶的元素。所用的钛合金，由此选择反应气体的分压，以使分压保持在阈值以下，在该阈值以上会生成氮化钛，碳化物或硼化物的钛相。由具有气体合金化边缘层的钛合金制成的耐磨和抗疲劳部件的根据本发明的特征基本上是，耐磨边缘层由α和β的细颗粒混合物组成间隙溶解的反应气体的钛合金晶粒，在地面上测得的表面硬度H s 为360 HV0.5 <= H s <= 500 HV0 .5或边缘层显微硬度H R （在表面以下0.1毫米处的抛光横截面上测得）为360 HV0.1 <= H R <= 560 HV0.1，延伸超过0.1 mm <= T R <3.5 mm的深度t R ，并且不包含任何氮化物，碳化物，氧化物或硼化物相通过反应气体。

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