Question

as the gain size of metal increases,its strength ?

Answer 1

Answer:

Smaller grains have greater ratios of surface area to volume, which means a greater ratio of grain boundary to dislocations. The more grain boundaries that exist, the higher the strength becomes. The following example illustrates this principle. Figure 2 shows a crude representation of two grains.Mar 15, 2010

Answer 2

Answer:

2 strength of the gain .....