Results 61 to 70 of about 3,313 (172)

Tuning Grain Boundary Carbides via Solute Rare‐Earth Elements to Prevent Intergranular Brittle Fracture

Rare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Carbides strengthen the grain boundaries; nevertheless, excessive carbide precipitates embrittle the grain boundaries of high‐temperature alloys during prolonged service. Here, we provide direct evidence of solute rare‐earth atoms and demonstrate that they can trap vacancies and inhibit interstitial diffusion, restraining carbide precipitation
Jiali Zhang, Yuan Ma, Jing Yan, Rui Deng, Xinli Wen, Wei Fang, Peinan Ding, Xiang Wang, Guogang Shu, Lijie Qiao, Yang He   +10 more
wiley   +1 more source

In Situ Formation of L12‐Al3Ti Precipitates Enabling High Strength and Toughness in Oscillating Laser‐Welded Aluminum Alloy

Rare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT A synergistic strategy combining a Ti interlayer and circular beam oscillation was proposed to improve the laser weldability of 6082‐T6 aluminum alloy. The Ti interlayer suppressed porosity, eliminated columnar grains, and significantly reduced grain size by 67.7% at the weld center. Mechanistically, fine L12‐Al3Ti precipitates clearly showing
Zhongping Hou, Yunfei Meng, Yuhui Xie, Jiaxing Li, Jingzhen Kuang, Qianxi Yu, Zongtao Zhu, Yan Liu, Hui Chen   +8 more
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, Volume 28, Issue 17, 9 September 2026.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Effects of Sn Microalloying on the Microstructure and Properties of Al-Mg-Mn-Si Alloy

Metals
Microalloying with Sn is a pivotal strategy for enhancing the strength and thermal stability of Al-Mg-Mn-Si alloys by enabling microstructural optimization.
Yue Chai, Shengping Wen, Xiaolan Wu, Kunyuan Gao, Wu Wei, Li Rong, Hui Huang, Zuoren Nie   +7 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, Volume 28, Issue 17, 9 September 2026.
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

Study of the Influence of Vanadium Microalloying on the Structure and Mechanical Properties of Structural Steel 10ХСНД (10KhSND) and Welded Joints on Its Basis

Механика машин, механизмов и материалов
The results of research of vanadium microalloying effect on mechanical properties, structure and hardness of low-alloyed structural steel 10ХСНД (10KhSND) and а welded joint on its basis are presented. It is shown that vanadium microalloying of the steel
Igor U. Kudelko, Aleksandr G. Sidorenko
doaj   +1 more source

Effect of Nb on the microstructure and mechanical properties of medium-carbon low-alloy wear-resistant steel

工程科学学报, 2015
The effect of Nb on the microstructure and mechanical properties of low-alloy wear-resistant steel was analyzed by optical microscopy,scanning electron microscopy,transmission electron microscopy and mechanical property test.
GENG Zhi-da, WU Hui-bin, ZHAO Ai-min, WANG Xiao-pei, ZHANG Yan, CHENG Jun-ye   +5 more
doaj   +1 more source

Increasing the efficiency of microalloying steel with boron‑containing alloys

, 2023
Compositions for microalloying steel with boron are presented, its positive effect on the process of steel crystallization, increasing strength and toughness is shown. The feasibility of using boron‑containing ferroalloys with low boron concentrations is
G. A. Rumiantseva, A. W. Kowalkov, Ya. L. Miakinnik, B. M. Nemenenok, G. Abesadze   +4 more
core   +1 more source

Boron‐Intervened Reaction‐Pathway and Interface‐State Engineering for Ductile Refractory Alloys

Rare Metals, Volume 45, Issue 10, October 2026.
Jikui Liu, Bingnan Qian
wiley   +1 more source

Effect of Nb Content on Strength and Toughness of 25MnB Crawler Steel and Its Microstructural Characterization

Metals
To address the failure of 25MnB crawler track steel due to insufficient strength and toughness, this study designed a new type of 25MnB crawler track steel and investigated the effects of the Nb content on its mechanical properties, microstructure ...
Zixun He, Jianjing Wang, Houxin Wang, Yajie Cui, Zhengbing Meng, Jiangbo Deng, Meiqiao Wu, Chaoyang Zhou, Xinbin Liu   +8 more
doaj   +1 more source