【摘要】 着重研究了热加工制度,冷轧工艺,成品退火制度对Zr-4合金管材氢化物取向的影响。结果表明,再结晶退火的成品管材,铸锭经过淬火后,氢化物取向因子低于铸锭直接挤压的氢化物取向因子。本试验进行的四种冷轧工艺对氢化物取向因子影响不大。在合适的冷轧工艺条件下,清除应力退火的管材,氢化物取向因子非常少。氢化物几乎都沿着圆周方向分布。在现有的工艺条件下,成品管靠外壁的氢化物取向因子高于内壁的氢化物取向因子。更多还原

【Abstract】 The hydrogenate orientation in Zr-4 alloy tubes effected by the hot-work, cold rolling and annealling of end-product tubes has been studied. The results show that the hydrogenate orientation factor of anealled end-product tubes formed by quenched ingots is smaller than those made of direct extruding of ingots. There is no remarkable difference of hydrogenate orientation factor between four cold rolling processes adopted in the experiments .The hydrogenate orientation factor could be very small, if an appropriate process is taken. The distribution of hydrogenates is almost in peripheral. For the end-products in the existing process, the hydrogenate orientation factor at tne outside of tube wall is higher than at the inside of tube wall.更多还原