摘要
研究了加工热处理工艺对Ｚｒ－４合金管材机械性能和耐蚀性能的影响。实验表明，工序中加入β淬火处理，可以改善合金的性能。挤压前坯料β淬火后直接轧至成品的管材，再结晶退火后在３７５℃下的屈眼强度为２０４～２１８ＭＰａ，较经过多次轧制到成品的管材，其屈服强度提高了４２％～４７％。加工过程中降低中间退火温度，减少加工道次的管材，在相同条件下的屈服强度为１８０～１８８ＭＰａ。对合金管材进行了４００℃和５００℃腐蚀试验，不同工艺管材表现出不同的耐蚀性能。改变工艺的管材具有最好的耐均匀腐蚀和疖状腐蚀能力。
The effects of working process and heat treatment on mechanical properties and corrosion resistance of Zircaloy-4 tubes have been studied. The experimental results show that β-quenching can improve the properties of the alloy. The yield strength measured at 375℃ is 204～ 218 MPa for the tubes β-quenched then rolled one time, which is increased by a factor of 42%～ 47%, as compared to the multiple-rolled tubes. The yield strength measured under the same conditions is 180～188MPa for the tubes annealed intermediately at lower temperature and rolled a few times. The tubes made by different processes show different cormsion resistance in the corrosion test of 400℃ and 500℃. The tubes made by changing technology show the optimal uniform and nodular corrosion resistance.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
1995年第6期53-57,共5页
Rare Metal Materials and Engineering
