Welcome, glad you've joined us!
Alcoholism and abuse don't get better with time--they both get worse, unless the alcoholic/abuser is serious about recovering and do a lot of work. It doesn't sound like he's ready to do that. He might NEVER be ready to do that.
My suggestion is that you contact your local domestic violence hotline and get some suggestions for safety planning. If he threatens you, call the police and apply for a restraining order. The abuse is a bigger threat to your well-being than his drinking. The alcohol isn't what MAKES someone abusive--it just allows that side to come out.
If you are already thinking about leaving, start making some plans to do that.