The Flow Strength Dependence on Temperature and Strain Rate in Low-Carbon Iron Alloys.

摘要

The flow strengths of a series of iron-carbon alloys,containing silicon,manganese,nickel,and phosphorus,were measured over the strain-rate range 0.001to 10/sec. At 24C all four elements reduced the strain-rate sensitivity of the base alloy (0.02wt-% C) but,with the exception of the combined addition of silicon and manganese,had little effect at -195C. At a strain rate of 2/sec,the thermal component of the strength was reduced by the alloying elements. This reduction was sufficient in the carbon,nickel,and phosphorus alloys to make their total strength less than that of the unalloyed iron at some temperatures. These results are discussed in terms of the current solution-softening models. (Author)