An indentation method for determining the plastic mechanical equation of state (PES) was studied. The constant loading rate and constant loading rate/load indentation tests were carried out. The method for determinin...An indentation method for determining the plastic mechanical equation of state (PES) was studied. The constant loading rate and constant loading rate/load indentation tests were carried out. The method for determining the work-hardening coefficient and the strain rate sensitivity coefficient of PES were discussed in detail. 304 stainless steel hot-treated at 1100°C was used to verify the method. The work-hardening coefficient and strain rate sensitivity coefficient of 304 stainless steel were respectively determined as 0.30 and 0.015. These values are very close to those achieved by tensile tests. From the establishment of the PES of 304 stainless steel it is shown that the PES obtained by the indentation method is easier than that by the tensile test.展开更多
Mechanical properties of electrodeposited and electroless copper with nano- and crystalline structure are considered. Grain diameters in films ranged from 0.06 to 8 μm. A model is described which takes into account t...Mechanical properties of electrodeposited and electroless copper with nano- and crystalline structure are considered. Grain diameters in films ranged from 0.06 to 8 μm. A model is described which takes into account the grain boundary hardening and density of dislocation.展开更多
文摘An indentation method for determining the plastic mechanical equation of state (PES) was studied. The constant loading rate and constant loading rate/load indentation tests were carried out. The method for determining the work-hardening coefficient and the strain rate sensitivity coefficient of PES were discussed in detail. 304 stainless steel hot-treated at 1100°C was used to verify the method. The work-hardening coefficient and strain rate sensitivity coefficient of 304 stainless steel were respectively determined as 0.30 and 0.015. These values are very close to those achieved by tensile tests. From the establishment of the PES of 304 stainless steel it is shown that the PES obtained by the indentation method is easier than that by the tensile test.
文摘Mechanical properties of electrodeposited and electroless copper with nano- and crystalline structure are considered. Grain diameters in films ranged from 0.06 to 8 μm. A model is described which takes into account the grain boundary hardening and density of dislocation.
