ArtMetal

Alright, I'm hoping the answer to my question is not at all, or it'll be hard work but you aren't lost. Anyway, I'll get down to it. I am interested in making a spear head. Not for an arrow or anything small, more like a boar spear or something that was used in the middle-aged wars. I bought some leaf springs from a car because I know the metal is really tough and would be strong enough to make a blade with. I went ahead and cut it in half already but I can't get the bend out of the metal. Of course it won't straighten with force so I was wondering what I can do to straighten it? Would heat treatment work? If so, how would I go about doing it? Oh and I'm on a really cheap budget so that makes it a lot more difficult to find a solution. After I solve this problem I plan on cutting the shape with a hacksaw and then taking a really long time and filing it down. I'm sure this sounds awful to you guys, any suggestions?

Thanks, and I live in Austin, TX - If you know someone near that can help me let me know.