典型文献
An orientation-dependent creep life evaluation method for nickel-based single crystal superalloys
文献摘要：
This paper aims to propose a creep life evaluation method considering the effect of crystallographic orientation.First,the maximum Schmid factor of{111}<112>and the correspond-ing lattice rotation angle were introduced to form an"orientation factor".Then the equivalent stress was calculated by multiplying this factor and the nominal stress.Latterly,the Larson-Miller Parameter(LMP)method was adopted as the rupture life evaluation criteria,in which the input variable was the equivalent stress instead of the nominal stress.All the predictions showed high accuracy when the proposed method was applied to Mar-M247,SC7-14,CMSX-2,Alloy454,CMSX-4 and DD6.Finally,the applicable temperature ranges of the orientation-dependent method(using equivalent stress)and the traditional LMP method(using nominal stress)were dis-cussed.The results show that only the Orientation-Dependent(OD)method is reliable at interme-diate temperatures(760-850℃)because the orientation has significant effect on the stress rupture life,while the influence of orientation is considerably reduced at high temperatures.Both methods provide precise predictions in this situation,and the LMP method should be favored since it is much easier to implement.
文献关键词：
中图分类号：
作者姓名：
Duoqi SHI;Tianxiao SUI;Zhenlei LI;Xiaoguang YANG
作者机构：
School of Energy and Power Engineering,Beihang University,Beijing 100191,China
文献出处：
引用格式：
[1]Duoqi SHI;Tianxiao SUI;Zhenlei LI;Xiaoguang YANG-.An orientation-dependent creep life evaluation method for nickel-based single crystal superalloys)[J].中国航空学报（英文版）,2022(01):238-249
A类：
Latterly,Alloy454
B类：
An,orientation,dependent,creep,life,evaluation,nickel,single,superalloys,This,paper,aims,considering,effect,crystallographic,First,maximum,Schmid,correspond,lattice,rotation,angle,were,introduced,form,Then,equivalent,stress,was,calculated,by,multiplying,this,nominal,Larson,Miller,Parameter,LMP,adopted,rupture,criteria,which,input,variable,instead,predictions,showed,high,accuracy,when,proposed,applied,Mar,M247,SC7,CMSX,DD6,Finally,applicable,ranges,using,traditional,dis,cussed,results,that,only,Orientation,Dependent,OD,reliable,interme,diate,temperatures,because,has,significant,while,influence,considerably,reduced,Both,methods,provide,precise,situation,should,favored,since,much,easier,implement
AB值：
0.557076
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