Insight into the Mechanical Properties and Fracture Behavior of Pt3Al Coating by Experiment and Theoretical Simulation

被引：0
作者：
Yong Pan
机构：
[1] Southwest Petroleum University,School of New Energy and Materials
来源：
Journal of Materials Engineering and Performance | 2021年 / 30卷
关键词：
fracture mechanism; fracture strength; mechanical properties; microstructure; Pt; Al thermal barrier coating;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The polycrystalline Pt3Al coating was prepared by the arc-melting method. The fracture mechanism of Pt3Al was investigated by the theoretical investigation. The interactomic potential of Pt3Al was built by the first-principles method. The measured fracture strength of Pt3Al is 449.5 MPa. The SEM image indicates that Pt3Al shows the lamellar cleavage fracture due to the large number of slips. The MD simulation indicates that this coating exhibits intermediate brittle fracture, which is close to the experiment. The cleavage fracture of Pt3Al is attributed to the atomic cluster. The development of microcracks on slip shear band is determinate by the thermal activation.
引用
收藏
页码：2661 / 2668
页数：7
相关论文
共 243 条
[1]  
Maji P(2017)Effect of Cr on the Evolution of Microstructures in As-Cast Ternary Niobium-Silicide-Based Composites Intermetallics 85 34-undefined
[2]  
Mitra R(2020)Influence of Transition Metal on the Mechanical and Thermodynamic Properties of IrAl Thermal Barrier Coating Vacuum 174 109203-undefined
[3]  
Ray KK(2019)Laser Welding of a Selective Laser Melted Ni-Base Superalloy: Microstructure and High Temperature Mechanical Property Mater. Sci. Eng. A 745 335-undefined
[4]  
Pan Y(2020)The Hydrogenation Mechanism of PtAl and IrAl Thermal Barrier Coatings From First-Principles Investigations Int. J. Hydrog. Energy 45 20032-undefined
[5]  
Lin Y(2019)Ultra-High Temperature Multi-component Shape Memory Alloys Scr. Mater. 158 83-undefined
[6]  
Liu G(2020)Origin of the Antioxidation Mechanism of RuAl(1 1 0) Surface from Firstprinciples Calculations Mater. Sci. Eng. B 259 114580-undefined
[7]  
Zhang J(2019)Laser Welding of Precipitation Strengthened Ni-rich NiTiHf High Temperature Shape Memory Alloys: Microstructure and Mechanical Properties Mater. Des. 162 229-undefined
[8]  
Hu X(2020)The Structural Stability and Optical Properties of NiPt Nanomaterial from First-Principles Investigations Mater. Sci. Semicond. Proc. 120 105306-undefined
[9]  
Xue Z(2018)Synthesis of Platinum Silicide at Platinum/Silicon Oxide Interface by Photon Irradiation Acta Mater 154 284-undefined
[10]  
Zhao G(2020)The Structural, Mechanical and Thermodynamic Properties of the Orthorhombic TMAl (TM=Ti, Y, Zr and Hf) Aluminides from First-Principles Calculations Vacuum 181 109742-undefined
12345678910