低碳贝氏体非调质钢的试验研究.pdf

15 3 V o. 15. N o. 3 2009 6 W IDE AND HEAVY PLATE June 2009 安航航 李太全 () , ; ; SEM ED S, , Study on Non- Quenched and L ow Carbon Bainitic Steel A n H anghang and L iT a iquan ( U n ive rsity o f Science and T echno ogy B eijing) A b stract A t the deve opm ent and study o f the h igh qua ity non- quenched and ow carbon ba in itic stee for au tomob i e, ow co st a oy composition satisfy ing the requ irements o f h igh qua ity non- quenched and ow carbon stee for au tom ob i e has been designed through rationa a oy com position design; By m eans o f forg ing and a ir coo ing process, the m icrostructure and properties of the m a teria are basica y approach ing the targe t of deve opm ent; By observ ing and ana y zing the inc u sions in the stee w ith SEM and EDS m ethods, c ean iness o f the stee has been further mi proved, w h ich can fu y m eeting the requirem en ts o f the automob i e stee . K eyw ords N on- quenched stee for automob i e, G ranu ar ba in ite, M icro structu re and properties [ 4~ 5] 0 , 600 M Pa , , , [ 1] - - - , , NbVT i , , S, 1 , 1. 1 [ 2 ] V , 1 200 ~ 1 250 ,