Microstructure and Thermal Plasticity of Semi-Solid M2 Steel Casting Ingots Using Inclined Slope Pre-Crystallization Method

He, You Feng; Xing, Shuming; Xie, Shui Sheng; Huang, Guo Jie; Gou, Jun

doi:10.4028/3-908451-59-0.539

Cited by 2 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One can see frequent dislocations within a single phase, which was identified basing on the indexing of SADP as austenite at [110] zone axis and of [6,11,-1] zone axis of M 7 C 3 . Several cases confirmed this fact in accordance with X-ray diffraction and earlier work [5] on this type of steel and the recent work on high W and Mo M2 steel [7]. …”

Section: Resultssupporting

confidence: 85%

“…Due to higher process temperatures than in SemiSolid Metal SSM forming of aluminum and magnesium there are many problems with estimation of liquid fraction, tool material and process routes [2,3]. However, several attempts have been made for SSM processing of steels containing from 0.4 -2.5% of C [1][2][3][4][5][6][7] in the search for a convenient semi-solid temperature interval. Among others the X210CrW12 high carbon steel shows the broadest semisolid temperature at relatively low temperature range [3].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Thixoforming technology of high carbon X210CrW12 steel

2009

View full text Add to dashboard Cite

Several samples were cast using thixoforming method. The feedstock used was a hot rolled commercial bar of the steel X210CrW12 with the following chemical composition: 2,11 %C, 10,5 %Cr, 0,7 %W, 0,4 %Si. An apparatus was constructed allowing the thixoforming of steel parts in a protective argon atmosphere and at a high piston velocity powered by a high pressure air. It was designed and built in such a way to allow first pumping air out and argon in, fast heating of a feedstock using high frequency generator, stamping of semi liquid sample at a high piston rate of a few m/s with in earlier resistance heated mould and simultaneous control of sample and mould temperature to ±1 o C. The liquid fraction was determined using Differential Scanning Calorimetry (DSC). Observation of the microstructure was performed using optical and transmission electron microscopy. It showed a globular structure in the material, when pre-heated to the temperature of 1230ºC at a liquid fraction of 30%. After several experiments with various sample and mould temperatures, a desired globular microstructure after a thixoforming process was obtained. Basic technological parameters which permit the complete filling of the die and a useful microstructure, such as piston velocity, temperature of the die, were elaborated. The microstructure after the thixoforming process showed globular structures with a size of 50 to 200µm of the oval particles of the austenite within an eutectic matrix. The crystal structure of globules was mainly austenite and that of the eutectic ferrite and M 7 C 3 carbide.

show abstract

Section: Resultssupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Thixoforming technology of high carbon X210CrW12 steel

2009

View full text Add to dashboard Cite

show abstract

“…E-mail address: behnam.aminahmadi@gmail.com (B. Amin-Ahmadi). plate become spherical after being maintained in the semisolid state (He et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Semisolid structure for M2 high speed steel prepared by cooling slope

Amin-Ahmadi

Aashuri

2010

Journal of Materials Processing Technology

View full text Add to dashboard Cite

Microstructure and Thermal Plasticity of Semi-Solid M2 Steel Casting Ingots Using Inclined Slope Pre-Crystallization Method

Cited by 2 publications

References 0 publications

Thixoforming technology of high carbon X210CrW12 steel

Thixoforming technology of high carbon X210CrW12 steel

Semisolid structure for M2 high speed steel prepared by cooling slope

Contact Info

Product

Resources

About