【寻找】金的弹性模量和屈服强度

changletian

【寻找】金的弹性模量和屈服强度
如果有塑性变形以后的应力应变数据，我将激动得非要请他吃饭不行！！！！！！

huangguang

Gold  
Au   
Click here to return to Periodic Table  
  
Find products containing this material in the following form:  All Foil Insulated Wire Lump Mesh Microfoil Microleaf Powder Rod Single Crystal Sphere Sputtering Target Tube Wire Search      
  
   
   
General Description: This metal has been known since prehistoric times
  
Gold is a soft metal with a characteristic yellow color. It is the most malleable and ductile of any element. It is unaffected by air, water, alkalis and acids, with the exception of "aqua regia", HNO3/HCl. The fact that it is chemically unreactive means that it is often found in its natural state. It is a good thermal and electrical conductor and has excellent reflective properties to both light and infrared. It has an abundance in the earth's crust of 0.0011 ppm.
  
Most of the metal is retained for use as bullion reserves, but some is used within the electronics and jewellery industries, where it is frequently alloyed with other elements to improve the mechanical properties of the metal (e.g. copper and silver). Other uses for the metal are as a heat reflecting coating for glass as well as as a decorative medium.   
     
     
  
Atomic Properties        
Atomic number 79  
Atomic radius - Goldschmidt ( nm ) 0.144  
Atomic weight ( amu ) 196.9665  
Crystal structure Face Centered Cubic  
Electronic structure Xe 4f14 5d10 6s1  
Ionization potential No. eV   
  1 9.22   
  2 20.5   
Natural isotope distribution Mass No. %   
  197 100   
Photo-electric work function ( eV ) 4.8  
Thermal neutron absorption cross-section ( Barns ) 98.8  
Valences shown 1,3  
     
  
Electrical Properties        
Temperature coefficient ( K-1 ) 0.0040 @ 0-100C  
Electrical resistivity ( μOhmcm ) 2.20 @ 20C  
Thermal emf against Pt (cold 0C - hot 100C) ( mV ) +0.74  
     
  
Mechanical Properties        
Material condition Soft Hard Polycrystalline  
Bulk modulus ( GPa )   171  
Hardness - Vickers 20-30 60   
Poisson's ratio   0.42  
Tensile modulus ( GPa )   78.5   
Tensile strength ( MPa ) 130 220   
Yield strength ( MPa )  205   
     
  
Physical Properties        
Boiling point ( C ) 3080  
Density ( g cm-3 ) 19.30 @ 20C  
Melting point ( C ) 1064.4  
     
  
Thermal Properties        
Coefficient of thermal expansion ( x10-6 K-1 ) 14.1 @ 0-100C  
Latent heat of evaporation ( J g-1 ) 1738  
Latent heat of fusion ( J g-1 ) 64.9  
Specific heat ( J K-1 kg-1 ) 129 @ 25C  
Thermal conductivity ( W m-1 K-1 ) 318 @ 0-100C

liuxianglong

不错，看来Daniel1588是费了一番功夫在网上找了这些资料！
不过我也有一些参考数据，跟你找的出入不大，仅供参考，由MathCAD提供：
Linear Expansion Coefficient 14.2e6
Modulus of Elasticity 7.446e10Pa
Poisson's ratio 0.42  
……………………………
可是资料中很少给出应力应变曲线，特别是塑性变形以后的应力应变数据，这个可能就需要做实验了！

haorenjie

非常感谢maliang_co2和Daniel1588的热心帮助，小弟在华中科技大学，EMAIL：fanzhuzi@peoplemail.com.cn,有事联系我。