Impact Property at Cryogenic Temperature of Candidate Materials for Fusion Reactor and Their Electron Beam Welded Joint

Transactions of the Japan Welding Society Pub Date : 1991-12-01 DOI:10.2207/QJJWS.9.23

S. Kaga, I. Fukuhara, Katsuhiro Fujii, K. Ogawa, T. Baba, Yoshiaki Yamamoto

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引用次数: 1

Abstract

Impact properties at cryogenic temperature of candicate materials for fusion reactor and their electron beam welded joints are investigated by using instrumented Charpy impact testing apparatus. Material used are aluminum alloys (A7N01, A5083, A6061), JFMS (Japanese Ferritic Martensitic Steel) and two kinds of high manganese steels. Although JFMS is a steel for high temperature use, the impact test is conducted at low tenperature same as the cases of the other materials. Testing results are obtained as follows.1. Base metals and welded joints of aluminum alloys exhibit high absorbed energy at low temperature. Ductility of each base metal and welded joint gradually decreases with decreasing of testing temperature.2. Base metal and welded joint of JFMS exhibit an absorved energy transition temperature at near a room temperature.3. Base metal and welded joint of high manganese)steel A-T (18Mn) exhibit abrupt decreasing of absorbed energy at 77K, but base metal and welded joint of high manganese steel B-T (22Mn-0.2N) exhibit gradual increasing of maximum strength and decreasing of ductility with decreasing of testing temperature.

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核聚变反应堆候选材料及其电子束焊接接头的低温冲击性能

采用Charpy冲击试验装置，研究了核聚变反应堆候选材料及其电子束焊接接头的低温冲击性能。所用材料有铝合金(A7N01、A5083、A6061)、JFMS(日本铁素体马氏体钢)和两种高锰钢。虽然JFMS是一种高温用钢，但与其他材料的情况一样，冲击试验是在低温下进行的。测试结果如下:1。贱金属和铝合金的焊接接头在低温下具有较高的吸收能。随着试验温度的降低，各母材和焊接接头的塑性逐渐降低。JFMS的母材和焊接接头在接近室温时表现出吸收的能量转变温度。高锰钢A-T (18Mn)母材和焊接接头在77K时吸收能急剧下降，而高锰钢B-T (22Mn-0.2N)母材和焊接接头随着试验温度的降低，最大强度逐渐升高，塑性逐渐降低。

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Transactions of the Japan Welding Society

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