Dickinson, 27, made his Test debut during the 2007 World Cup and has won 19 caps.
"Alasdair is another great signing for us," said Steve Diamond, Sale's executive director of sport.
"He has a very high work-rate and is a good scrummager. He will perfectly with what we are trying to achieve at the club."
Sale's 21-year-old centre Jonny Kennedy, though, has announced his retirement from the game after suffering a series of concussions.
Diamond added: "We are really disappointed for Jonny as he had fought his way back from a knee injury and was hitting form.
"His games in January saw him score three tries in three games, which deservedly won him the club's player of the month award.
"It's sad when a young player like Jonny has to leave the sport, but his health is more important and he has made the correct decision."
Kennedy, the son of Sale's millionaire owner Brian Kennedy, won under-20 international honours with Scotland.
Gilbert has released a new line of rugby cleats. The Gilbert Virtuo 8S is part of the exciting new product. Check it out.
The entire All Blacks apparel line has been updated for 2013/14. Check out the New Zealand All Blacks polo.
The Nike Tiempo is a solid rugby cleat and one of few styles still made from full-grain natural leather.
The Gilbert Blitz 8S rugby cleat is a great cleat at a great price of $69.99. Get a new pair of cleats today.
A cool looking all black rugby cleat with the high performance adidas is known for. Get in the Gear!
Wear the crest of the British and Irish Lions on your t-shirt. A great look for the summer.
$29.99
The All Blacks Performance t-shirt is black with hints of blue from the training jersey. Very Cool.
The New Zealand All Blacks training jersey for 2013/14. Get in the Gear!
The USA Rugby Pro Alternate rugby jersey is perfect for any fan of the Eagles. Get yours to wear during the summer Test matches.
The NEW All Blacks 2013/14 jersey has arrived at World Rugby Shop. Dare to wear the colors of the All Blacks.
