Observation of tritium distribution in V-4Cr-4Ti alloy by tritium radioluminography
Observation of tritium distribution in V-4Cr-4Ti alloy by tritium radioluminography
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氚放射发光观察V-4Cr-4Ti合金中氚分布
DOI：
10.2320/matertrans.43.451
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发表时间：
2002
影响因子：
1.2
通讯作者：
T. Ohnishi
中科院分区：
文献类型：
--
作者：
H. Homma;H. Saitoh;T. Misawa;T. Ohnishi
本文用氚放射发光法观察了V-4 mass%Cr-4 mass%Ti合金中氚的分布，并研究了合金中氚分布与合金组成元素的关系。在铸态试样中，氚浓度在富钛区较高，即在低钛区和高钛区的局部氚浓度分别为156和202 mol ppb。氚的分布与枝晶间钛的偏析有很强的相关性。在热处理后的试样中，枝晶间钛的偏析对氚的分布几乎没有影响。在中央区域和周围区域的试样表面的氚浓度已分别为209和147摩尔ppb。有人认为，氚在中心区域的这种积累是由于板状试样中的应力场的约束条件所产生的Gorsky效应造成的。在热处理试样中，氚分布受试样形状的影响比受钛偏析的影响更大。
Tritium distribution in V-4 mass%Cr-4 mass%Ti alloy has been observed by the tritium radioluminography, and the relation between the tritium distribution and the constituent elements of the alloy have been investigated. In the as-cast specimen, tritium concentration has been higher in the titanium enriched region, that is, the local tritium concentrations at the lower and higher titanium region are 156 and 202 mol ppb, respectively. The tritium distribution has shown a strong correlation with the titanium segregation in the interdendritic region. In the heat treated specimen, the tritium distribution has been rarely affected by the interdendritic titanium segregation. Tritium concentration at the central area and at the surrounding area in the specimen surface have been 209 and 147 mol ppb, respectively. It has been thought that this accumulation of tritium to the central area is caused by the Gorsky effect which generated due to the constraint condition of the stress field in the plate shaped specimen. In the heat treated specimen, the tritium distribution has been more strongly affected by the shape of the specimen than by the titanium segregation in it.