Results 81 to 90 of about 25,819 (293)

Simulation of precipitation kinetics and strengthening in high-alloyed steel [PDF]

, 2014
Precipitation-strengthened maraging steel PH17-4 is used for applications where high strength together with high toughness and corrosion resistance is needed. Optimum combination of these critical properties is sensitive to aging temperature and time. We
Stechauner, Georg, Kozeschnik, Ernst
core  

The Effect of Aging on the Microstructure, Precipitation Response, and Fatigue Behaviour in an Al-Li-Cu Alloy

Engineering Transactions, 2005
The interrelationships between precipitate characteristics and mechanical properties of an Al-Li-Cu alloy was quantified. The microstructure, precipitation response, and fatigue crack growth rates in the Al-Li-Cu alloy AF/C458 were studied following ...
J. Fragomeni, R. Wheeler, K. V. Jata
doaj   +1 more source

Hydrogen‐Assisted Fracture of Iron‐Based Fe–Ni–Al Alloys

Advanced Engineering Materials, EarlyView.
Principal relations and fracture mechanisms of single‐phase and precipitate‐strengthened Fe–Ni–Al alloys subjected to prior electrochemical hydrogen charging are identified. The mechanisms of hydrogen effect on strength and microhardness are discussed, including hydrogen‐induced increase in microhardness and the role of hydrogen in fracture behavior ...
Nataliya Yadzhak, Olha Zvirko, Rostyslav Leshchak, Hryhoriy Nykyforchyn   +3 more
wiley   +1 more source

Enhancing Strength and Ductility of a Ni-26.6Co-18.4Cr-4.1Mo-2.3Al-0.3Ti-5.4Nb Alloy via Nanosized Precipitations, Stacking Faults, and Nanotwins

Nanomaterials
The addition of Co to Ni-based alloys can reduce the stacking fault energy. In this study, a novel Ni-26.6Co-18.4Cr-4.1Mo-2.3Al-0.3Ti-5.4Nb alloy was developed by increasing the Co addition to 26.6 wt.%.
Jingjing Zhang, Yongfeng Shen, Wenying Xue, Zhijian Fan   +3 more
doaj   +1 more source

Creep‐Induced Microstructural Evolution in an A2‐B2 Superalloy

Advanced Engineering Materials, EarlyView.
A 27.3Ta‐27.3Mo‐27.3Ti‐8Cr‐10Al (at.%) refractory high‐entropy alloy with precipitation‐strengthened A2‐B2 microstructure was studied by creep tests at 1030°C, which demonstrate a transition in deformation mechanisms in the range of 100–150 MPa applied stress. This is associated with changes in dislocation–precipitate interactions. Relevant deformation
Liu Yang, Aparajita Pramanik, Sandipan Sen, Shubhashis Dixit, Marcel Muench, R. J. Vikram, Daniel Schliephake, Yolita M. Eggeler, Ankur Chauhan, Martin Heilmaier, Alexander Kauffmann   +10 more
wiley   +1 more source

Simulation of precipitation kinetics and precipitation strengthening of B2-precipitates in martensitic PH 13-8 Mo steel [PDF]

, 2012
In order to understand the relation between microstructure and mechanical properties of martensitic PH 13-8 Mo steel during isothermal treatment at 575 °C, the evolution of ordered bcc-B2 precipitates is predicted by precipitation kinetics simulations ...
Povoden-Karadeniz, Erwin, Kozeschnik, Ernst   +1 more
core  

Al-5Cu-0.3Sc-B₄C Nanocomposites: Microstructural Refinement, Strengthening Mechanisms, and Corrosion Behavior

Nanomaterials
In this study, Al-5Cu-0.3Sc nanocomposites reinforced with 0–20 wt.% B4C were successfully fabricated using a combined melt-spinning, mechanical alloying, and sintering route.
Seyit Çağlar, Cengiz Temiz
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Strengthening dual-phase Mg-Li alloy through precipitation control

Materials Research Letters
Inherent low strength is the major limitation of Mg-Li alloys. Through precise control of precipitates, the cast Mg-8Li-3Al-2Zn alloy obtained a high specific ultimate tensile strength of 213 kN·m·kg−1.
Yuchuan Huang, Fangzhou Qi, Jiawei Sun, Yangyang Xu, Youjie Guo, Jiaxin Yu, Lingfan Yi, Xinmiao Tao, Guohua Wu, Wencai Liu   +9 more
doaj   +1 more source

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