Pittsburgh, PA (SportsNetwork.com) - Three days after being formally released by the Carolina Panthers, running back DeAngelo Williams signed a two-year contract with the Pittsburgh Steelers on Friday.

Williams, a two-time 1,000-yard rusher during his nine-year tenure with the Panthers, is expected to serve as a complement to Pro Bowler Le'Veon Bell in the Steelers' backfield.

The 31-year-old was one of the NFL's premier backs in 2008, when Williams racked up 1,515 rushing yards and a league-best 18 touchdowns. He followed up with a 1,117-yard season in 2009, but was limited to just six games by an assortment of injuries last year.

Williams rushed for a career-low 219 yards on 62 carries, while his 3.5 yards- per-attempt average was also the worst of his career.

The Panthers' all-time leader in rushing yards, Williams accumulated 6,846 on the ground along with 46 touchdowns with that franchise. The 2006 first-round pick added 1,621 yards and seven touchdowns on 178 receptions.