Dear Dr. Ahmad Hadizadeh,

René 142 is a high strength, nickel-base directionally solidified (DS) alloy that has high rupture strength, excellent resistance to grain boundary cracking, and superior high-velocity oxidation resistance.

I suggest you to have a look at the following notes/papers:

-Rene' 142: A High Strength, Oxidation Resistant DS Turbine Airfoil Alloy

Earl W. Ross and Kevin S. O’Hara

Superalloys 1992 Edited by S.D. Antolovich, R.W. Stusrud, R.A. MacKay, D.L. Anton, T. Khan, R.D. Kissinger, D.L. Klarstmm The Minerals, Metals & Materials Society, 1992

Available at: https://www.tms.org/Superalloys/10.7449/1992/Superalloys_1992_257_265.pdf

-Microstructures of Rene 142 nickel-based superalloy fabricated by electron beam melting

Murr, L.E. et all

Acta Materialia 45, 15 pp. 4289-4296 (2013)

Available at: https://inis.iaea.org/search/search.aspx?num=10&orig_q=RN%3a45037926&lang=en-US&login=false&user=External&src=&sort=date:D:L:d1&q=+inmeta:RecordType%3DJournal%2520article&dnavs=inmeta:RecordType%3DJournal%2520article

-Nickel-base weld materials, processes of using, and components formed therewith

Michael Patrick Maly, Thomas Joseph Kelly

US Patent, Doc. US20120251840A1 (2012)

Available at: https://patents.google.com/patent/US20120251840A1/en

-A study on the microstructural characterization of René 142 deposited atop René 125 processed through scanning laser epitaxy

Amrita Basak, Suman Das

THERMEC 2016, 9th International Conference on Processing and Manufacturing of Advanced Materials, THERMEC 2016 - Graz, AustriaTrans Tech Publications Ltd Publisher, pp. 187-192 (2016)

Available at: https://pennstate.pure.elsevier.com/en/publications/a-study-on-the-microstructural-characterization-of-ren%C3%A9-142-depos

Enjoy reading and best regards, Pierluigi Traverso

Dear Dr. Ahmad Hadizadeh sir,

Rene 142, a commercial, columnar grained, gas turbine airfoil Ni-based superalloy, has been fabricated from a pre-alloyed, atomized powder by additive manufacturing using electron beam melting. Monolithic components having [0 0 1] oriented, columnar grain structures exhibited a creep-optimized 59% volume fraction of cuboidal, coherent, γ′-phase precipitates averaging 275 nm on the side, and with γ/γ′ channel widths ranging from 25 to 75 nm. Transmission electron microscopy, utilizing bright and dark field imaging of optimally oriented γ/γ′ interfaces showed prominent misfit coherency strains as δ-fringe patterns. Corresponding hardness measurements also indicated the possibility of creep strength comparable with the commercial alloy. The notable feature of this study was the monolithic development of desirable superalloy properties without conventional, multi-step heat treatments. Further details can be get from

Microstructures of Rene 142 nickel-based superalloy fabricated by electron beam melting

June 2013Acta Materialia 61(11):4289–4296

DOI: 10.1016/j.actamat.2013.04.002

René 142 is a high strength nickel-base superalloy, however its mechanical properties were not well documented. Even though their structural variability may also give the bit different responses. In terms of their structural similarity to X718 alloys, you may check the similar X718 with close compositions and microstructures for a good approximation.

For example, check this one:

Development of fine-grained structure and the mechanical properties of nickel-based Superalloy 718

Materials Science and Engineering: AVolume 55515 October 2012Pages 13-20

Dear Dr. Pierluigi Traverso and Dr. Nelaturi V Raghavaiah

Thanks for the answer I have read these before and I didn't find the mechanical properties i wanted . I m looking for the properties such as

"Density, Ultimate Elongation, Poisson's Ratio, Shear modulus, Thermal Conductivity, Young Modulus, tensile and yield stress, Thermal coefficient, Rupture strength, tensile elongation" in different temperature.

help me if you find anything

sincerely A. Hadizadeh

Dear Zhongwen Yao

Thank you for the answer.

I didnt find any similarity between X718 and R142

Please check the attachment.

Dear Ahmad,

TEM could be used to measure the microstructural stability and mechanical properties of RENE 142.

Rend N6 is compatible with all types of coatings and shows no property degradation from SRZ. In addition, Rene N6 does not form the very detrimental cellular colonies in the dendrite cores, which can significantly reduce creep rupture properties. RenC N6 is approximately 30°C stronger than the second generation single crystal, Rend N5. Rene N6 represents the best combination of strength and stability in third generation single crystal superalloys.

Rene 142 is a high strength, nickel base Directionally Solidified (DS) turbine alloy, which is now operational in commercial and military jet engines. Rene l42 is directionally solidified with columnar grain boundaries; this process is less expensive than the directionally solidified single crystal (no grain boundaries) process, due to easier mold making, faster casting, less expensive inspection and higher yields. This is a monolithic superalloy components having [0 0 1] oriented, columnar grain structures can exhibit a creep coherent, γ′-phase precipitates averaging 275 nm on the side, and with γ/γ′ channel. Transmission electron microscopy, utilizing bright and dark field imaging of optimally oriented γ/γ′ interfaces showed prominent misfit coherency strains as δ-fringe patterns.

Hardness measurements also indicate the possibility of creep strength comparable with the commercial alloy.

Hope content is helpful for you.

Ashish