Broken Turbo Shaft 2

Here is the back of the turbine wheel of the 6.0L turbocharger shown in the previous picture. In the center you can see the effects of severe heating - the bluish, purple color of the metal. As the shaft fatigued and began to come apart the outer edges and the fins of the wheel contacted the turbine housing. This part was retrieved from the exhaust downpipe about a foot down from the turbo.