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首页> 外国专利> METHOD OF THERMOMECHANICAL PROCESSING OF HIGH-ALLOYED PSEUDO- (TITANIUM ALLOYS ALLOYED BY RARE AND RARE-EARTH METALS

METHOD OF THERMOMECHANICAL PROCESSING OF HIGH-ALLOYED PSEUDO- (TITANIUM ALLOYS ALLOYED BY RARE AND RARE-EARTH METALS

机译：稀土和稀土金属合金化的高合金伪钛合金的热机械加工方法

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FIELD: metallurgy.;SUBSTANCE: method comprises manufacture of a sheet semifinished product and thermomechanical processing thereof by multiple heatings and deformations. Thermomechanical processing of sheet semifinished products is carried out in seven stages. The first stage includes an all-around forging on a slab in at least two sets with a total deformation degree of not less than 40±10% at each one, lowering of forging temperature and intermediate heatings in the temperature range from Tih+180 to Tih+490°C. The second stage comprises heating the slab to a temperature (Tih+250÷Tih+420)°C, deformation by hot rolling with a total deformation degree of not less than 80±10% and intermediate heatings. The third stage comprises heating to a temperature (Tih+30÷Tih+70)°C, deformation of the intermediate hot-rolled semifinished rolled products by hot rolling with a total deformation degree of at least 40±10% and intermediate heatings. The fourth stage comprises further deformation of the semifinished rolled products into one or more stages by heating to a temperature (Tih+90÷Tih+130)°C and hot rolling with a total deformation degree from 40 to 70±10% and intermediate heatings. The fifth stage comprises heat treatment of sheet semifinished products at a temperature (Tih+10÷Tih+50)°C for 0.3-1.5 hours in a chamber resistance furnace and subsequent water or air hardening to obtain β-structure. The sixth stage comprises cold rolling of sheets with a total deformation degree from 20 to 60±10%. The seventh stage comprises straightening at a temperature (Tih-20÷Tih-90)°C with subsequent surface treatment.;EFFECT: increasing degree of structure elaboration by increasing the limiting deformation degrees during hot and cold processing with pressure, increasing technological plasticity while maintaining strength and plasticity after hardening heat treatment, decreasing the minimum relative bend radius in the quenched state.;3 cl, 2 tbl
机译：技术领域：方法：该方法包括制造片状半成品并通过多次加热和变形对其进行热机械加工。片状半成品的热机械加工分七个阶段进行。第一阶段包括在板坯上进行至少两套全方位锻造，每组的总变形度不少于40±10％，降低锻造温度，并在T 的温度范围内进行中间加热ih +180到T ih + 490°C。第二阶段包括将板坯加热到温度（T ih + 250÷T ih +420）°C，通过热轧进行变形，总变形度不小于高于80±10％和中间加热。第三阶段包括加热至温度（T ih + 30÷T ih +70）°C，通过热轧将中间热轧半成品轧制成形总变形度至少为40±10％，并进行中间加热。第四阶段包括通过加热到温度（T ih + 90÷T ih +130）°C并加热将半成品轧制产品进一步变形为一个或多个阶段。总变形度从40到70±10％的轧制和中间加热。第五阶段包括在室电阻炉中在温度（T ih + 10÷T ih +50）°C下对薄板半成品进行热处理0.3-1.5小时然后进行水或空气硬化，以获得β结构。第六阶段包括冷轧薄板，总变形度为20％至60±10％。第七阶段包括在（T ih -20÷T ih -90）°C的温度下矫直并随后进行表面处理。 ; 3 cl，2 tbl;在压力下冷热加工过程中的极限变形度，增加工艺可塑性，同时保持淬火热处理后的强度和可塑性，减小淬火状态下的最小相对弯曲半径。

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