核用锆合金包壳管内压爆破试验及性能研究

Study on the burst tests and properties of zirconium alloys for nuclear reactor

摘要:

在室温及350℃和400℃下对核用锆合金包壳管的两种合金进行了爆破试验,并对爆破试验的数据进行了分析研究。研究结果表明：针对不同试验温度,二种合金的爆破强度随温度的升高而降低,且2号合金的爆破强度优于1号合金的；通过对爆破的破口形貌进行观察发现,相对室温爆破,350℃和400℃下包壳管的肿胀较大,破口开裂较小,破口生长方向与管材轴向成一定角度,破口均为韧性断口。

Abstract:

The burst tests at room temperature,350 ℃ and 400 ℃ of two kinds of zirconium alloys for nuclear reactor were studied.By analyzing results from burst tests,it is shown that the burst strengths of the two kinds of zirconium alloys decreased with testing temperatures rising.The No.2 alloy was stronger than No.1.By observing the opening of the burst,burst swellings at 350 ℃ and 400 ℃ were bigger than at the room temperature,the openings were smaller.The directions of the opening growths were different from the axial directions of the claddings,and the openings of burst were ductile fractures.