Low cycle fatigue ( lcf ) behavior of zircaloy - 4 has been reviewed in the present paper . then , the lcf behavior of a recrystallized zircaloy - 4 plate with different texture has been studied at room temperature and 400 , respectively 并在此基础上，研究了不同温度(室温和400 ) 、不同取向(平行于轧向和垂直于轧向)的再结晶退火态zr - 4合金板材试样的低周疲劳性能。
By now , the research has been mature on enhancing the recrystallization temperature and mechanics performance of molybdenum wire in order to prolong its life span and enlarge its employ boundary by doping method . some of the doped molybdenum wire has been manufactured 到目前为止，国内外对于用掺杂的方式提高钼丝再结晶温度和综合力学性能以延长其高温下的使用寿命、扩大其使用范围的研究已比较成熟，有些已投入生产。
After surveyed , morphology of the cathodes shows restore and recrystallization . furthermore after testing the emission characteristic , the surface crystal of the cathode has changed to more fine , and the re oxides become more uniform on the surface 分析发射实验前后阴极表面的形貌和成分变化，观察到，在发射过程中，高温，高电场作用下，阴极表面发生了回复和再结晶过程，表面组织微晶化，同时发射实验后稀土氧化物在表面的分布均匀。
A thermal rigid - visco - plastic constitutive relation accompanied by dynamic recrystallization is implanted into deform3d based on the unix and windows system by means of the user routines in order to add the function of predicting microstructure evolution during hot forging process to deform3d 在unix和windows平台上，对现有的体积成形商业软件deform3d进行了二次开发，利用deform3d的用户子程序功能，插入了包括动态再结晶过程的热粘塑性本构模型。
Zircaloy - 4 sheet , which was cold - worked followed by recrystallization annealing , exhibits longer lcf life in the rolling direction than that in the transverse direction , and the fact that difference in lcf life between both directions becomes larger as the range of plastic strain becomes lower can be attributed to the texture effect , p - solution treatment deteriorates the alloy ' s lcf property because the treatment lowers the average value of alloy ' s schmid factors , and the subsequent annealing - treatment in a - phase range has a impact on the lcf properties , i . e . the subsequent annealing - treatment at 500 ? for 1 . 5h results in better property than that at 750 for 1 . 5h , which comes mainly from the fact that the alloy annealled at 500 for 1 . 5h has lower amount of the precipitate particles than the alloy annealled at 750 for 1 . 5h 对于冷加工后经再结晶退火处理的zr - 4合金，轧制方向的低周疲劳寿命比横向要大。随着_ p的降低，两个方向的低周疲劳寿命的差别相应增加，这是由于合金中存在织构的缘故。冷加工后经再结晶退火处理的zr - 4合金在固溶处理后，抗疲劳性能明显降低，这主要是由于固溶处理降低了合金的schmid因子；固溶处理后在相区的退火对疲劳性能有影响，即500 1 . 5h退火的抗疲劳性能要优于750 1 . 5h退火，这主要与500 1 . 5h退火的合金中沉淀相粒子的数量较少有关。
In view of the recrystallization problem of dz4 alloy directional coagulation turbine blade , experimental study revolving around the blade manufacture craft was performed , the recrystallization organization typical picture was obtained , therefore the recrystallization organization ' s distinction method was determined , and the forming condition of recrystallization organization was founded out , which has provided the basis for the control of recrystallization production 摘要针对dz4合金定向凝固精铸涡轮叶片出现再结晶问题，围绕叶片制造工艺开展试验研究，制作了再结晶组织典型图片，确定了再结晶组织的鉴别方法，摸清了再结晶组织形成条件，为控制再结晶的产生提供了依据。
