I don't see why not. If the hammer in question dates before 1997 it is forged. If produced after 1997 it is MIM (metal injection molded). As much as the purist in me dislikes MIM parts, they can be treated just like any other steel part, that is, they can be blued, heat-treated, soldered or welded.
To be honest, in this day of costly labor and little hand fitting during production, MIM parts have a lot going for them as each part is identical to the last and a decent trigger is possible with little fitting. Although there are some reports of breakage of MIM parts, I believe these occurances are greatly overblown.
Not sure I agree with your tastes in revolver asthethics...but give it a try. Who knows, you may start a trend.