Results 31 to 40 of about 3,044 (204)

High‐Temperature Nanoindentation of Metals: Assessing Thermal Drift, Frame Compliance, and Chemical Composition Effects on the Reported Mechanical Properties

Advanced Engineering Materials, EarlyView.
Do not let thermal drift and instrument artifacts deceive high‐temperature nanoindentation results. We compare classical Oliver–Pharr and automatic image recognition analyses across steels and a Ni alloy to quantify these effects. Accounting for artifacts reveals systematic softening with temperature, while Cr and Ni additions boost resistance ...
Velislava Yonkova, Steffen Brinckmann, Ruth Schwaiger   +2 more
wiley   +1 more source

Effect of Co and Mo content on mechanical properties of metal injection molding high alloy ultra-high strength steels

Fenmo yejin jishu
Based on the traditional martensitic aging steels, a new type of high alloy ultra-high strength steel powders (Fe–18.0Co–15.0Ni–8.0Mo–3.0Cr–0.5Cu–0.4Nb–0.4V–0.2Al) was designed by increasing the content of Co and Mo elements.
HUANG Man, YAN Xiaopeng, LE Chen, TANG Mingqiang   +3 more
doaj   +1 more source

Creep Properties and Deformation Mechanism of Additively Manufactured NiAl‐CrMo Composites

Advanced Engineering Materials, EarlyView.
Additively manufactured NiAl‐CrMo composites contain numerous interfaces and cell boundaries that control their creep response. At 700°C under high applied stress, creep is dominated by dislocation‐controlled power‐law mechanisms. At 800°C–900°C and lower stresses, creep is primarily diffusion‐controlled along cell boundaries.
Jan Vollhüter, Andreas Bezold, Johan Westraadt, Katharina Fiegl, Subham Chattoraj, Benjamin Wahlmann, Carolin Körner, Michael Mills, Mathias Göken, Steffen Neumeier   +9 more
wiley   +1 more source

A novel 2.1 GPa martensitic stainless steel manufactured by laser powder bed fusion and post treatment

Journal of Materials Research and Technology
Ultra-high strength martensitic stainless steel prepared by traditional methods often has to go through forging or rolling process. In the work, A novel 20Cr13Co12Mo4Ni2 martensitic stainless steel was developed and manufactured by laser powder bed ...
Qipeng Wang, Yuzheng Liang, Xinsheng Chen, Ziwei Yang, Kewei Dong, Yong Peng, Qi Zhou, Kehong Wang, Jian Kong   +8 more
doaj   +1 more source

Transformation-Induced Ductility of Reverse Austenite Evolved by Low-Temperature Tempering of Martensite

Metals, 2020
A novel steel combining the “quenching and tempering (Q&T)” process was exploited that can achieve the enhancement of austenite by interface migration during tempering the martensitic matrix mixed with films of austenite.
Pengju Du, Peng Chen, Devesh K. Misra, Di Wu, Hongliang Yi   +4 more
doaj   +1 more source

Study on the mechanism of excellent strength and toughness combination of a high nitrogen martensitic stainless steel treated by Q-C-P-T process

Journal of Materials Research and Technology, 2023
In this study, a high nitrogen martensitic stainless bearing steel with ultra-high strength and excellent toughness combination treated by quenching-cryogenic cooling-partitioning-tempering (Q-C-P-T) process was obtained.
Yabo Wang, Hao Feng, Huabing Li, Yumeng Zhang, Zhouhua Jiang, Xiaodong Wang   +5 more
doaj   +1 more source

Direct Metal Deposition of Graphene–Ti28Nb35.4Zr Matrix Composites With Enhanced Mechanical, Corrosion, and Biocompatibility Properties for Bone Implants

Advanced Engineering Materials, EarlyView.
Graphene nanoplatelet (0.1 wt.%) reinforcement significantly enhances the performance of β Ti‐28Nb‐35.4Zr alloy. Grain refinement, reduced water contact angle, and improved surface characteristics promote osteoblast adhesion and complete surface coverage after 7 days.
Khurram Munir, Jixing Lin, Yuncang Li, Li Zhu, Paul F. A. Wright, Cuie Wen   +5 more
wiley   +1 more source

Defect Evolution and Mechanical Performance of Fused Filament Fabrication‐Manufactured 17‐4PH Stainless Steel Revealed by X‐Ray Computed Tomography

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography reveals how process‐induced defects evolve from green to sintered states in Fused Filament Fabrication (FFF)‐manufactured 17‐4PH stainless steel. Internal porosity, weakest cross‐sections, and fracture locations show strong correlation with tensile performance, demonstrating the potential of computed tomography (CT)‐based ...
György Ledniczky, Márk Sárközi, Ibolya Zsoldos, Zoltán Weltsch   +3 more
wiley   +1 more source

Microstructural Evolution during Thermal Exposure of G115 Steel and Its Influence on Mechanical Properties

Advances in Materials Science and Engineering, 2022
Microstructural evolution and mechanical property degradation of the newly developed G115 steel during thermal exposure are highly important for the safe power plant operation.
Shaohai Ma, Kai Yan, Chang Che, Xisheng Yang, Gong Qian   +4 more
doaj   +1 more source

Effect of Deep Cryogenic Time on the Microstructure and Mechanical Property of Cr-Mn-Si High-Strength Alloy Steel

Metals, 2023
Cr-Mn-Si alloyed high-strength steel was subjected to deep cryogenic treatment after quenching and tempering (Q-T), and the microstructure and property evolution of the alloy steel after deep cryogenic treatment were studied.
Jingyu Zhang, Haian Mao, Yi Meng, Rong Shi, Jiamin Fang   +4 more
doaj   +1 more source