During this unconventional process, the Fed walks a fine line of fueling the economy and creating inflation. However, with rates close to zero, this is usually not a problem.
Another result of quantitative easing is the devaluation of the currency. Because the money supply is now larger, each dollar is worth slightly less. This directly impacts the country's imports and exports in the following way: those who import goods are harmed by a weaker dollar and exporters benefit by increased demand for their less expensive goods.