rupe37

Ru Peng

Professor Emerita

Enhancing surfaces for performance and durability

Surface engineering is a cost-effective way to improve the performance of materials. I am working in the field of materials research focusing on two different topics, namely residual stresses and high temperature coatings.

Residual stresses in engineering materials

The properties of engineering materials such as resistance to fatigue or stress corrosion cracking can be affected by residual stresses originating from different manufacturing processes. I have long research experience in the field, working with different research projects varying from studying residual stresses from various manufacturing processes to analyzing the mechanical/fatigue behavior with regard to residual stresses and microstructure. My specialties are X-ray and neutron diffraction techniques and scanning electron microscopy. My main research interests in the field are given below:
  • Residual stress generation and characterization
  • Fatigue with regard to manufacturing effect
  • In-situ diffraction study of material behavior 
  • Stress corrosion cracking

High Temperature Coatings

High temperature coatings are designed and used to protect metallic components operating in the hot sections of advanced engines. The resistance of such coatings against service induced coating degradation is critical for the performance and durability of the components. My research in the field focuses on optimizing the coatings resistance against degradation, which includes development, characterisation and modelling of metallic coatings for oxidation and corrosion protection and thermal barrier coatings which also provide heat isolation. 

Publications

2025

S. Jiang, Ru Peng, Z. F. He, L. Q. Cui, Z. Hegedues, U. Lienert, N. Jia (2025) Mechanical behavior anisotropy of multilayered metallic composites revealed by in-situ synchrotron X-ray diffraction: Example of Ti/Nb laminates processed by accumulative roll bonding Acta Materialia, Vol. 287, Article 120815 (Article in journal) Continue to DOI
Yuan Tian, Jinghao Xu, Ru Peng, Mattias Calmunger, Johan Moverare (2025) Enhanced fatigue resistance from metastable phase transformation in cold drawn austenitic stainless steel 316L Materials Science & Engineering: A, Vol. 924, Article 147848 (Article in journal) Continue to DOI
Jingchen Li, Jian He, Ru Peng, Hongbo Guo (2025) Oxidation resistance and diffusion inhibiting effect of continuous Re-base layer between PtAl coating and advanced Ni3Al-base single crystal superalloy Journal of Alloys and Compounds, Vol. 1013, Article 178581 (Article in journal) Continue to DOI
Xiaoyu Sun, Xiaolong Li, Sheng Guo, Lilong Zhu, Jianwei Teng, Liang Jiang, Johan Moverare, Xin-Hai Li, Ru Peng (2025) The impact of Al/Cr ratio on the oxidation kinetics of Y-doped AlCoCrFeNi high-entropy alloys at 1100 °C Intermetallics (Barking), Vol. 176, Article 108582 (Article in journal) Continue to DOI

2024

S. Jiang, Y. T. Li, Z. F. He, Ru Peng, Z. Hegedues, U. Lienert, N. Jia (2024) Unraveling the origin of ductility in multilayered Ti/Nb composites: role of dislocation evolution Materials Research Letters, Vol. 12, p. 903-911 (Article in journal) Continue to DOI

Publications

2025

S. Jiang, Ru Peng, Z. F. He, L. Q. Cui, Z. Hegedues, U. Lienert, N. Jia (2025) Mechanical behavior anisotropy of multilayered metallic composites revealed by in-situ synchrotron X-ray diffraction: Example of Ti/Nb laminates processed by accumulative roll bonding Acta Materialia, Vol. 287, Article 120815 (Article in journal) Continue to DOI
Yuan Tian, Jinghao Xu, Ru Peng, Mattias Calmunger, Johan Moverare (2025) Enhanced fatigue resistance from metastable phase transformation in cold drawn austenitic stainless steel 316L Materials Science & Engineering: A, Vol. 924, Article 147848 (Article in journal) Continue to DOI
Jingchen Li, Jian He, Ru Peng, Hongbo Guo (2025) Oxidation resistance and diffusion inhibiting effect of continuous Re-base layer between PtAl coating and advanced Ni3Al-base single crystal superalloy Journal of Alloys and Compounds, Vol. 1013, Article 178581 (Article in journal) Continue to DOI

Surface engineering research at LiU