EMB-170 Captain reported the aileron jammed when they tried to turn the aircraft to the right.

Narrative

It was the First Officer's leg to fly; ZZZ-ZZZ1. Aircraft X. Taking off of Runway XX in ZZZ; our assigned heading for the SID was a right turn of 340. On climbout the First Officer noted abnormal function of the flight controls during the right turn. He gave me the flight controls and I verified that the yoke would not turn right more than 1/4 scale deflection before jamming up. Flight controls were transferred back to the first officer so that I could run checklists and coordinate with ATC; Dispatch; and the Flight Attendants. We elected to discontinue the flight and initially told ATC we were going to return to ZZZ in order to keep us close to the airport while we came up with a plan. The airplane was overweight by about 4;000 lbs. and with the combination of that and the flight control malfunction we decided to divert to ZZZ1 for the longer runways. APU was turned on to burn off fuel. I advised Dispatch and the Flight Attendants. The Flight Attendants made an announcement for me because I was task saturated and they were advised that they had 10-15 minutes to prepare the cabin and that no brace command was needed at that time.The overweight landing QRH was ran. The First Officer flew the RNAV GPS X Runway XXL into ZZZ1 and it was clearly visible that the yoke was jamming anytime he put in for right aileron. Touchdown was smooth and descent rate at landing was 100-140 FPM. Emergency vehicles were standing by and we were able to taxi to the gate as a non-event. Aileron jamming was unable to duplicate once we were on the ground.This aircraft had been written up multiple times for the same issue. We were unable to duplicate issue with the yoke on the ground. I would suggest taking it for a flight to duplicate and fix.