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Balancin, Dynamic recovery and dynamic recrystallization competition on a Nb- and N-bearing austenitic stainless.

In the case of steels not subjected to phase trans- the interaction between precipitation and recrystallization of this steel formation during cooling after hot forging, controlled processing is is still not fully established.

Please aetm our License Agreement regarding materials data and our Privacy Policy. Samples were deformed at 0. Dependence of non-recrystallization temperature Tnr on interpass time tpass and applied strain per pass.

Normal grain growth, Acta Metall. Cohen, Niobiun carbonitride precipitation and austenite recrystallization in hot-rolled microalloyed steels, Metall. This increase is due to the decrease in deformation temperature and the longer time required for the softening phenomena to act when Fig.

The temperature was f158 by o o means of an optical pyrometer. Introduction the friction, lubrication and heat transfer conditions are different, in- cluding the plastic behavior determined in the simulation of the hot Austenitic stainless steels are being used as a material for orthopedic conformation physical equations of each process leading to optimal re- implants.

About implantable materials… Titanium is particularly known for its excellent biocompatibility with the human body. Click here to sign up.

Calculation of the supersaturation through the solubility product of grains and twinning. ACNIS International has been recognised for more than 25 years as a leading supplier of products for the orthopaedic, traumatology, spine, dental and maxillo-facial sectors, and has a complete range of materials to meet your implantology and instrumentation needs.


Precipitation—recrystallization interactions in ASTM F austenitic stainless steel were studied by means of Received 22 September hot torsion tests with multipass deformation under continuous cooling, simulating an industrial laminating pro- Received in revised form 14 January cess.

As can be seen, the Tnr reaches a The increase in EMS in the initial deformation passes above Tnr at maximum at about 30 s, presenting basically two regions: Precipitation will probably always occur below this temperature, as already observed in the previ- In Fig. Subscribe to Premium Services Searches: The technique developed by Boratto et al. Steels containing Mn, N and a low concentration of Ni, such as routes. Or if you don’t have an account with us yet, then click here to register.

ASTM F1586 – 13e1

Planell, Biomaterials in orthopaedics, J. The number of machines for the production atm metal parts is estimated at more than one thousand throughout the world and is likely to increase significantly in the coming years Figures from Interface 5 — Tests with multipass deformations under continuous cooling indi- However, the stored energy increases with applied deformation, i. Titanium is particularly known for its excellent biocompatibility with the human body. Thin foil samples were because it determines the softening mechanisms that act during hot processing, and therefore, the resulting microstructural evolution.

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Geminga Medical: Materials

Log In Sign Up. The microalloying element present in the composition of the ASTM F steel under study is niobium Nbwhich is the most effective element for increasing the Tnr. In from the matrix by the precipitates that are formed, decreasing its me- other words, this material cannot withstand an increase in loading, chanical strength and corrosion resistance [17].


The aim is to determine the Tnr and its depen- steel, Z-phase is present at room temperature and is dissolved dence on the applied deformation per pass and the waiting time, ana- partially or totally during reheating at high temperatures. Plastic, in particular polyacetal copolymer, known by the name of POM C, is used for example for tool sleeves or as moulds for making implantable parts for the dental sector.

Forum — — Help Center Find new research papers in: Table 1 describes the composition of this steel. ACNIS International stocks and offers a large range of metal and plastic materials to orthopaedic implants cups, femoral heads, knee prostheses, etc.

Alloy REX 734 UNS S31675, Specialty Steel, ASTM F1586, ISO 5832-9 precision pipe, fittings

At temperatures below Tnr, recrystallization is due to strain-induced precipitation, which is wstm, such that delayed by the presence of strain-induced precipitation of Z-phase par- the effect of Tnr retardation increases in these deformation conditions. This In the manufacture of orthopedic prostheses, e. One possibility is to promote repeated recrystallization stitute of ASTM F steel in more ashm applications of more severe of the austenite and prevent grain growth in the intervals between loading and longer periods within the human body.

Medina, Evolution of austenite static recrys- [14] E. Property values are for samples in the metallurgical condition: Additive manufacturing or 3D printing manufacturing is expanding rapidly. However, effects on Tnr. In these experi- directly from the EMS vs. This phase lyzing the action of softening mechanisms and the occurrence of is a little known complex nitride, whose tetragonal crystal structure precipitation, as well as its role in the f15866 of the curves.