Preparation method of low-activation and high-wear-resistant multi-principal-element alloy in nuclear irradiation environment
A multi-principal alloy and irradiation environment technology, which is applied in the direction of improving process efficiency and energy efficiency, can solve problems such as low activation and wear resistance, and achieve excellent wear resistance
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[0030] One kind of the low activation nuclear radiation environment, strong wear preparing multi-master-alloy of the following steps:
[0031] 1) milling
[0032] Were weighed metal powder, metal powder WC ball mill jar charged with the entire ball milled to obtain uniform mixing of the raw powder product;
[0033] 2) low vacuum presintering
[0034] Step 1) The resulting product was charged in a graphite die and then placed in a sintering furnace or ion SPS sintering furnace discharge, the pre-sintering in a vacuum degree of 5 ~ 10Pa, the pre-sintering temperature is 650 ~ 950 ℃, to obtain pre-sintered selective oxidation block;
[0035] 3) High temperature vacuum sintering
[0036] Presintering step 2) selection based oxide block body further vacuum degree of vacuum reached 5 × 10 -3 Pa ~ 1 × 10 -1 Pa for high temperature sintering, the sintering temperature is 1600 ℃ ~ 1900 ℃, after sintering, the furnace cooling the material to room temperature, the low activation nuclear radi...
Embodiment 1
[0044] Preparation method of low activation, strong resistance W0.2-TA0.2-CR0.2-V0.2-TA0.2-CR0.2-V0.2-Ti0.2-O alloy under nuclear irradiation environment:
[0045] Ball mill: Choose W powder, TA powder, Cr powder, V powder, Ti powder, and test the above five components W0.2-TA0.2-CR 0.2-V0.2-Ti0.2 according to atomic percentage components; The powder weighing is placed in a WC (tungsten carbide) ball mill for ball milling, Wc ball as a grinding ball, the spherium is 2: 1, then mixed under argon under argon with 300 r / min. , Get a mixed raw powder product;
[0046] Low vacuum pre-sintering: Mixed powder is placed in graphite mold, and then placed in SPS discharge plasma sintering fuels, the sintering parameters are: vacuum degree 8Pa, the temperature rise rate is 10 ° C / min, the sintering temperature is 800 ° C, sintering pressure 6MPa, the holding time is 1 min;
[0047] High vacuum high temperature sintering: further vacuum, vacuum reaches 5 × 10 -2 The PA is high temperature...
Embodiment 2
[0050] Preparation method of low activation, strong resistance W0.2-TA0.3-CR0.3-Ti0.2-O alloy under nuclear irradiation environment:
[0051] Ball mill: Choose W powder, TA powder, Cr powder, Ti powder, and weigh the above five components W0.2-TA0.3-CR0.3-Ti0.2-O in the atomic percentage; will be proud The powder was placed in a WC (tungsten carbide) ball mill, and the Wc ball was used as a grinding ball. The spherium was 3: 1, and then mixed under argon under argon at a rate of 200R / min, resulting in mixing uniform Original powder product;
[0052] Low vacuum pre-sinter: The mixed powder is placed in a graphite mold, and then placed in a hot pressure sintering furnace for sintering, the sintering parameter is: the vacuum is 5Pa, the temperature of the temperature is 20 ° C / min, the sintering temperature is 950 ° C, the sintering pressure is 5MPa, the holding time is 30s;
[0053] High vacuum high temperature sintering: further vacuum, vacuum reaches 5 × 10 -3 PA is sintered, ...
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