ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
Semi-solid metal forming (SSM) has been recognized as a new forming technology, whichis different from the present metal forming methods. Basic research on SSM has been put intooperation and a number of SSM techniques have been widely applied in industry. In the application ofSSM technique, at present, it is mainly used to produce the low melting point alloys such as Al-base,Zn-base and Mg-base alloys, but the high melting point alloys, for example steels as the most widelyuseful metal are not extensively studied and applied. In the present work, the electromagnetic stirringmethod was used to prepare semi-solid slurry of spring steel–60Si2Mn and stainlesssteel–1Cr18Ni9Ti. At the same time, spring steel–60Si2Mn and stainless steel–1Cr18Ni9Ti weredirectly rolled into thick strips in the semi-solid state (Rheo-rolling). It is aimed at studying themicrostructure and properties of the strips to establish the feasibility of rheo-rolling for the productionof the steel strips. According to the present research work, it has been shown that rheo-rolling processcombines the casting and hot rolling into a single step for near net-shape production, compared withthe conventional hot-rolled metallurgical process. Besides being such a cost-effective process,rheo-rolling process possesses irregular crystal grains such as rosette-type primary crystals in themicrostructures because of sufficient agitation during solidification. The overall homogenization ofthe macrostructures in the whole part of steel ingot can be achieved
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/24/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.141-143.457.pdf
