1) single crystal nickel-base superalloy
单晶镍基合金
1.
The creep equation have been set up,and the creep activation energy and stress exponent have been calculated by means of measurement of the creep curves and internal fractional stresses of dislocation motion during creep of a single crystal nickel-base superalloy.
通过测定一种单晶镍基合金的高温拉伸蠕变曲线及位错运动的内摩擦应力σ0,建立了综合蠕变方程,计算出稳态蠕变期间的表观蠕变激活能及相关参数。
2.
The microstructures for a single crystal nickel-base superalloy with [001] orientation,after tension load at 1040℃ under 120 MPa for various creep time, were observed by measns of TEM.
对[001]取向单晶镍基合金的恒温拉伸蠕变组织形貌的TEM观察表明，蠕变初期，基体γ相八面体滑移系中两组1／2＜110＞位错运动至同一晶面相遇，发生反应形成三维节点的位错网络；稳态期间，基体中运动位错可通过界面位错网攀移越过筏状γ相；蠕变后期形变的特征是运动位错在位错网损坏处切入筏状γ相
3.
The microstructures of a single crystal nickel-base superalloy with [001] orientation at different creep stages of the constant loading compression were observed by meansof TEM and SEM.
对［001］取向单晶镍基合金恒温恒载压缩蠕变不同时间的组织形貌进行SEM和TEM观察表明：蠕变初期，两立方γ′相沿平行于应力轴方向扩散相连定向生长成为条形筏结构；垂直通道中基体[001］晶向共格应变量减小，应变能降低是合金元素定向扩散形成γ′相筏结构的驱动力；压缩与拉伸蠕变相比较，γ′相形筏所需要的时间较长，应力较
2) single crystal nickel-based superalloy
单晶镍基合金
1.
By means of the measurement of the creep curves and microstructure observation,an investigation has been made into the influence of the element W concentration on the microstructure and properties of single crystal nickel-based superalloys.
通过对两种成分单晶镍基合金进行蠕变曲线测定,长期时效处理及组织形貌观察,研究了元素W含量对单晶合金组织与性能的影响。
2.
By means of measurement of creep curves and microstructure observation, an investitation has been made into the influence of the solution temperature on the creep properties od a single crystal nickel-based superalloy.
根据差热曲线分析制定出合金的热处理工艺,结合蠕变性能测试及组织形貌观察,研究了固溶温度对一种含Re单晶镍基合金蠕变性能的影响。
3) single crystal nickel base superalloys
单晶镍基合金
1.
The affection factors of the creep behaviour for two single crystal nickel base superalloys with [001] orientation were studied by measuring the creep curves and internal stress of dislocation motion, and by EDAX composition analysis as well.
通过对 [0 0 1 ]取向单晶镍基合金蠕变曲线和位错运动内摩擦力的测定及能谱微区成分分析 ,研究了两种合金的蠕变特性。
4) single crystal nickel base superalloy
单晶镍基合金
1.
The microstructures of [001] single crystal nickel base superalloys under the constant loading tensile creep were observed by means of SEM, and the chemical composition of γ and γ′ phases were analyzed by EDAX in order to investigate the features and effect factors of the directional coarsening of γ′ phase.
对 [0 0 1 ]取向单晶镍基合金恒载拉伸蠕变的组织形貌进行 SEM观察和 EDAX成分分析 ,研究了 γ′相定向粗化特征及影响因素。
5) single crystal nickel based superalloy
单晶镍基合金
1.
The creep resistance of two single crystal nickel based superalloys with orientation has been studied by the internal stress measurement of dislocation motion,EDAX composition analysis and TEM observation.
通过对［００１］取向单晶镍基合金稳态蠕变期间位错运动内应力的测定及ＥＤＡＸ微区成分分析，研究了两种合金的抗蠕变性能。
2.
Influence of microstructure evolution on lattice misfit of a single crystal nickel based superalloy;
通过对不同状态单晶镍基合金进行组织形貌的观察和X-ray衍射分析,研究了组织演化对合金中γ′、γ两相晶格常数和错配度的影响。
补充资料：镍基单晶高温合金
镍基 单 晶 高温合金具有优良的高温性能，是目前制造先进航空发动机和燃气轮机叶片的主要材料。为了满足高性能航空发动机的设计需求，多年来，各国十分重视镍基单晶高温合金的研制和开发。20 世 纪 80年代以来，单晶高温合金一直沿着其独特的道路发展。随着合金设计理论水平的提高和生产工艺的改进，相继出现耐温能力比第1代单晶合金分别大约高30℃和60℃的第2代单晶合金和第3代单晶合金;第2代单晶高温合金的代表有pwa1484(') ,c msx一4(2).等，第3代单晶高温合金的代表有cmsx一loll',cm sx一11(0),r e nen6(5)等。研究表明[(6)，第3代单晶高温合金cmsx一10的耐温能力比第2代单晶合金cmsx -4(最高使用温度约(1163cc)的大约高3090，其使用温度可达1204℃左右，同时，还具有十分明显的蠕变强度优势。近年来出现的第4代单晶合金rr3010的承温能力达到11800c('1，用在英国rr公司最新研制的trent发动机上。re的加入以及hf,y ,la ,ru 等元素的合理应用，使新的单晶合金的持久性能和抗环境性能均有明显的提高。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条