Details

Autor(en) / Beteiligte

• Xu, S.S.
• Zhao, Y.
• Tong, X.
• Guo, H.
• Chen, L.
• Sun, L.W.
• Peng, M.
• Chen, M.J.
• Chen, D.
• Cui, Y.
• Sun, G.A.
• Peng, S.M.
• Zhang, Z.W.

Titel

Independence of work hardening and precipitation strengthening in a nanocluster strengthened steel

Ist Teil von

• Journal of alloys and compounds, 2017-07, Vol.712 (C), p.573-578

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Work hardening and precipitation strengthening are two important strengthening methods that closely associate with dislocation density. Here, a new class of nanocluster strengthened steel with a tensile strength of ∼2.02 GPa and an elongation of ∼7% is developed through a combination of work hardening and precipitation strengthening. The work hardening is strongly dependent on the dislocation density induced by thermomechanical treatments while there is no effect for dislocation density on precipitation strengthening. The work hardening and precipitation strengthening are independent and can be controlled separately. The strengthening effects of nanoscale precipitates are quantitatively analyzed and assessed. [Display omitted] •A nanocluster strengthened steel with ultra-high strength have been developed.•The nanoclusters are not preferentially precipitating onto the dislocations.•Precipitation strengthening is not dependent on the dislocation density.•Work hardening and precipitation strengthening are independent.