新锆合金的相变温度

Phase Transition Temperature of the New Zircaloy

采用 DTA及膨胀法测量新锆合金 N18及 N36合金的相变温度。测试结果表明 ,N18合金的α→ (α+β)的相变温度在 776～ 785℃间 ,其 (α+β)→ β的相变温度在 930～ 987℃间。在 5 80℃左右 ,有第二相析出。对 N36合金 ,其α→ (α+β)相变温度约为 72 5℃ ,(α+β)→β的相变温度约为 910℃。

Phase transformation of the N18 alloy and the N36 alloy were studied by using DTA and dilatometer.For the N18 alloy, the phase transition temperature of the α→(α+β) is 776 to 785℃,and the one of the (α+β)→β is 930 to 987℃,and the secondary phase precipitates at about 580℃.For the N36 alloy,the phase transition temperature of the α→(α+β) start at about 725℃,and the one of the(α+β)→β is about 910℃.