在反应堆材料辐照性能研究中,往往会因为样品尺寸过大而造成一些问题,如:辐照费用昂贵、样品内部温度梯度过大、辐照后样品感生放射性过大等。对此,国外在上世纪开发了小冲杆测试方法,该方法使用是的φ3mm×0.3mm的小薄圆片试样从而较好地解决了这些问题。该试验方法是通 In the research of irradiation material properties of reactor materials, some problems often occur because of the large sample size, such as expensive irradiation, excessive temperature gradient inside the sample and excessive induced radioactivity. In this regard, abroad in the last century developed a small punch test method, the method is the use of a small wafer specimen φ3mm × 0.3mm so as to better solve these problems. The test method is pass