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利用透射电子显微镜弱束成像技术研究了钨离子注入经１１５０℃固溶处理的奥氏体不锈钢（１Ｃｒ１８Ｎｉ９Ｔｉ）的横截面样品，发现离子辐照引发被注入材料亚结构变化的深度远大于离子本身的注入深度，钨离子注入多晶奥氏体不锈钢中位错密度沿注入深度有一个峰值．位错密度峰值处的亚结构，在多个晶体学倒易矢量显现．其他区域位错显像有方向性；在最密排面上易于显像，其他的矢量方向大多隐像
We studied the cross-sectional samples of austenitic stainless steel (1Cr18Ni9Ti) soluted with 1150 ℃ by tungsten ion beam implantation by transmission electron microscopy. We found that the depth of sub-structure induced by ionizing radiation is far greater than that of ions Injecting depth, dislocation density in tungsten ion implanted polycrystalline austenitic stainless steel has a peak along the depth of implantation. The substructure at the peak of dislocation density appears in a number of crystallographic reciprocal vectors. Dislocation imaging in other areas have the direction of the most dense surface easy to develop, most of the other vector image hidden