采用高能球磨和放电等离子体烧结技术制备纯钨、氧化物弥散强化钨和碳化物弥散强化钨。为了评价钨在瞬态热冲击下的性能,采用强流脉冲离子束,在热流密度高达160MW/(m2·s-1/2)的条件下对4种不同晶粒尺寸的钨进行抗热冲击试验。与商品钨相比,弥散强化钨在瞬态高热流作用下显现出不同的行为。氧化物弥散强化钨显现出较差的抗热冲击性能,这主要是由于低熔点的第二相Ti和Y2O3的引入,从而使得钨的表面发生熔融、起泡和开裂。而碳化物弥散强化钨合金则显现出较好的抗热冲击性能。 Pure tungsten, oxide dispersion strengthened tungsten and carbide dispersion strengthened tungsten were prepared by high energy ball milling and spark plasma sintering. In order to evaluate the performance of tungsten under transient thermal shock, four kinds of tungsten with different grain sizes were subjected to thermal shock at a high heat flux density of 160MW / (m2 · s-1/2) using a pulsed ion beam test. Compared with the commercial tungsten, dispersion strengthened tungsten shows different behavior under transient high heat flux. Oxide dispersion strengthened tungsten shows poor thermal shock resistance mainly due to the introduction of the second phase of low melting point, Ti and Y2O3, causing the surface of the tungsten to melt, blister and crack. The carbide dispersion strengthened tungsten alloy shows better thermal shock resistance.