Duplex stainless steels:Where we are? Whats next?
Duplex stainless has always been an exiting area of interest for researchers,stainless steel producers,fabricators and end users.They present simultaneously very diversified technical challenges and very attractive in service properties with on top of that excellent cost/properties ratios particularly in very critical markets including:oil and gas,chemical industry,pulp and paper industry,water systems,desalination plants,pollution control equipments,chemical tankers,...The main topics of the paper concern structure and mechanical properties,weld ability,corrosion resistance properties and service properties.Standard and newly developed grades are presented.The standard duplex stainless steels i.e.the 2304,2205 and the 2507 (Cu,W,…)family grades were confirmed,by more than 20 years successful in service applications,as very valuable grades with outstanding performances.New grades including the so-called lean duplex dedicated to volume oriented markets (possible replacement of 304/316 grades)and some niche grades dedicated to very specific markets are now coming up.After the scientific excitement of the first duplex conferences,we discovered at the Grado conference held in June 07 that the duplex grades start to be well established products particularly suitable for corrosion resistance applications but also have a two digit yearly growth thanks to the production of new grades and production ranges (coils and bars)targeting the replacement of more costly 300 series including 304 but also rusty carbon steel in for ex.structural application.
duplex stainless steel markets and applications chemistries metallurgy mechanical properties corrosion resistance properties weld ability
J Charles
Arcelor Mittal Global Research GM,5-7 ,rue Luigi Cherubini,93210 La Plaine Saint-denis Cdx,France
国际会议
上海
英文
721-736
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）