@Huggin80 No and No, you cannot queue for anything in Ironman challenge, it's in the rules before you take it. It's a 100% solo adventure, you are alone until 70.
You may want to go for the Survivalist challenge, if you are looking to go Dungeons or Battleground, I don't want to say crap but you need to group up with other survivalists, and go on foot to dungeons, not sure if the queue works in this challenge.