Results 121 to 130 of about 20,751 (287)

Non-local high cycle fatigue criterion for metallic materials with corrosion defects

MATEC Web of Conferences, 2014
Designing structures against corrosion fatigue has become a key problem for many engineering structures evolving in complex environmental conditions of humidity (aeronautics, civil engineering …).
May Mohamed El, Saintier Nicolas, Palin-Luc Thierry, Devos Olivier   +3 more
doaj   +1 more source

The design of an Fe-12Mn-O.2Ti alloy steel for low temperature use [PDF]

An investigation was made to improve the low temperature mechanical properties of Fe-8 approximately 12% Mn-O 2Ti alloy steels. A two-phase(alpha + gamma) tempering in combination with cold working or hot working was identified as an effective treatment.
Hwang, S. K., Morris, J. W., Jr.
core   +1 more source

Tailoring Microstructure and Hardness in Maraging 300 Steel via 2.4 wt.% Niobium Addition and Controlled Aging Treatments

steel research international, EarlyView.
High Nb (2.4 wt.%) addition to Maraging 300 steel drives lattice distortion and nanoscale Nb–Mo‐rich precipitation, confirmed by energy‐dispersive X‐ray spectroscopy mapping (Mo ~5.4 wt.%, Nb ~2.5 wt.%). Nanoindentation reveals strong matrix hardening (H >4.8 GPa) at 480°C aging, while 560°C induces ~1.92 vol.% reverted austenite, enabling tunable ...
Laylla Sharon B. Peixoto, Mohammad Masoumi, Luís Henrique N. de Lima, Marcos Natan da Silva Lima, Luis Flávio Gaspar Herculano, Isabel Ferreira de Barros, Geronimo Perez, Maria Vittoria Moraschini Reis, Hamilton Ferreira Gome Abreu, Marcelo J. Gomes da Silva   +9 more
wiley   +1 more source

Superior stress relaxation resistance of 2.2 GPa martensitic steels and the effect of vanadium

Journal of Materials Research and Technology
For ultra-high-strength steels subjected to sustained loading, stress relaxation resistance is a core indicator determining their long-term service reliability.
Siming Huang, Jianping Ouyang, Liejun Li, Songjun Chen, Xianqiang Xing, Zhuoran Li, Haixiao Ye, Zhengwu Peng, Zhichao Luo   +8 more
doaj   +1 more source

Crash Behavior of DP800–DP1000 Advanced High‐Strength Steel’s Dissimilar Resistance Spot Welded Joints Under Quasi‐static and High Strain Rates

steel research international, EarlyView.
The high‐strain‐rate behavior of resistance spot‐welded DP800–DP1000 joints is investigated. Results show that microstructural gradients across BM–HAZ–FZ govern hardness, strain rate sensitivity, and failure modes. While strength increases with strain rate, energy absorption is controlled by ductility, with DP800–DP800 joints showing superior ...
Pankaj Shrivastava, Velaphi Msomi
wiley   +1 more source

EFFECT OF PRECIPITATION HARDENING ON MICROSTRUCTURE OF 17-7 PH STEEL WITH MODIFIED CHEMICAL COMPOSITION

Journal of Sustainable Technologies and Materials
Steel 17-7PH is austenitic-martensitic steel with high strength, hardness, and resistance to creep, and corrosion. It is designed for aerospace components, but can also be used for other applications that require high strength and corrosion resistance ...
Belma Fakić, Derviš Mujagić, Omer Beganović   +2 more
doaj   +1 more source

COMPOSITION DESIGN OF HIGH-STRENGTH MARTENSITIC PRECIPITATION HARDENING STAINLESS STEELS BASED ON A CLUSTER MODEL [PDF]

, 2012
Qing Wang, Qianfeng Zha, Enxue LIU, Chuang Dong, Xuejun Wang, Chaoxin TAN, Chunjun Ji   +6 more
openalex   +1 more source

Evaluation of the performance of ChatGPT‐4 and ChatGPT‐4o as a learning tool in endodontics

International Endodontic Journal, EarlyView.
Abstract Aims The aim of this study was to evaluate the accuracy and consistency of responses given by two different versions of Chat Generative Pre‐trained Transformer (ChatGPT), ChatGPT‐4, and ChatGPT‐4o, to multiple‐choice questions prepared from undergraduate endodontic education topics at different times of the day and on different days ...
Esra Arılı Öztürk, Ceren Turan Gökduman, Burhan Can Çanakçi   +2 more
wiley   +1 more source

Rapid heat treatment yields excellent strength and ductility balance in a wear-resistant steel

Journal of Materials Research and Technology
The rapid heating treatment with different tempering temperatures of 160, 200 and 320 °C was innovatively applied in one developed martensitic wear-resistant steel.
En Tang, Qing Yuan, Rui Zhang, Jie Ren, Zhongbo Li, Guang Xu   +5 more
doaj   +1 more source

Stress corrosion cracking evaluation of several precipitation hardening stainless steels [PDF]

Stress corrosion cracking evaluation of several precipitation hardened stainless ...
Humphries, T. S., Nelson, E. E.
core   +1 more source