(1. 北京科技大學(xué) 核材料研究所，北京 100083；
2. 西南交通大學(xué) 材料科學(xué)與工程學(xué)院，成都 610031)
摘 要: 綜述了國(guó)內(nèi)外廣泛研究的W-La2O3和W-TiC合金的制備工藝、力學(xué)性能和輻照性能的研究進(jìn)展。結(jié)果表明：向鎢基體中加入La2O3彌散相，雖然能夠顯著改善鎢的強(qiáng)度和韌性，但使鎢的抗輻照性能降低，氫泡密度和氫滯留量明顯增加；當(dāng)采用TiC納米顆粒作為彌散相，經(jīng)過(guò)熱等靜壓燒結(jié)和塑性加工后，鎢合金的抗彎強(qiáng)度達(dá)到4.4 GPa，再結(jié)晶溫度高于2 473 K，韌脆轉(zhuǎn)變溫度(DBTT)比純鎢的低100 K；TiC的加入能夠顯著提高鎢的抗輻照性能，與純鎢相比，氚滯留量減小，沒(méi)有明顯的輻照硬化，材料表面沒(méi)有裂紋和剝落。
關(guān)鍵字: 鎢基面向等離子體材料；彌散強(qiáng)化；輻照效應(yīng)
（1. Institute of Nuclear Materials, University of Science and Technology Beijing, Beijing 100083, China;
2. School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China）
Abstract:Research progress on preparation process, mechanical properties and irradiation performance of W-La2O3 and W-TiC alloy was reviewed. The previous research results reveal that the addition of La2O3 phase into tungsten matrix improves the strength and toughness of tungsten remarkablely, and results in the reduction of irradiation resistance and increase in density of hydrogen blisters and hydrogen retention. When TiC nanoparticles are used as dispersion phase, W-TiC alloy worked by hot isostatic pressing sintering and plastic processing exhibits high bending strength of 4.4 GPa, high recrystallization temperature over 2 473 K and low DBTT (100 K lower than pure that of tungsten. In addition, the additon of TiC significantly improves the irradiation resistance of tungsten. Compared to pure tungsten, W-TiC alloy has a lower deuterium retention without visible irradiation hardening, crack and flaking on the material surface.
Key words: tungsten-base plasma facing material; dispersion strengthening; irradiation effect
