Residual stress in polycrystalline alumina: Comparison of two-dimensional maps and integrated scans in fluorescence-based measurements [0.03%]
基于荧光的测量中多晶氧化铝残余应力二维图和一维积分扫描结果对比研究
Chris A Michaels,Robert F Cook
Chris A Michaels
The spatially heterogeneous residual stress fields in a series of three polycrystalline alumina materials are compared using two fluorescence-based measurement techniques. In the first technique, 18 hyperspectral arrays of the Cr-based R 1...
A NON-SCHMID CRYSTAL PLASTICITY FINITE ELEMENT APPROACH TO MULTI-SCALE MODELING OF NICKEL-BASED SUPERALLOYS [0.03%]
基于非施密特晶体塑性 finite element method 的镍基 superalloys 多尺度建模方法研究
Shahriyar Keshavarz,Somnath Ghosh,Andrew C E Reid et al.
Shahriyar Keshavarz et al.
This paper develops non-Schmid crystal plasticity constitutive models at two length scales, and bridges them in a multi-scale framework. The constitutive models address thermomechanical behavior of Nickel-based superalloys for a large tempe...
Synchrotron X-Ray Microbeam Diffraction Measurements of Full Elastic Long Range Internal Strain and Stress Tensors in Commercial-Purity Aluminum Processed by Multiple Passes of Equal-Channel Angular Pressing [0.03%]
多次等通道角挤压变形的工业纯铝中全弹性的长程内应力和应变张量的同步辐射X射线微束衍射测量结果
Thien Q Phan,Lyle E Levine,I-Fang Lee et al.
Thien Q Phan et al.
Synchrotron X-ray microbeam diffraction was used to measure the full elastic long range internal strain and stress tensors of low dislocation density regions within the submicrometer grain/subgrain structure of equal-channel angular pressed...
Effect of powder oxidation on the impact toughness of electron beam melt Ti-6Al-4V [0.03%]
粉末氧化对电子束熔化Ti-6Al-4V冲击韧性的影响
W A Grell,E Solis-Ramos,E Clark et al.
W A Grell et al.
Powder quality in additive manufacturing (AM) electron beam melt (EBM) of Ti-6Al-4V components is crucial in determining the critical material properties of the end item. In this study, we report on the effect of powder oxidation on the Cha...
Threshold damage mechanisms in brittle solids and their impact on advanced technologies [0.03%]
脆性固体中的临界损伤机制及其对先进技术的影响
Brian R Lawn,Han Huang,Mingyuan Lu et al.
Brian R Lawn et al.
Threshold damage mechanisms in brittle covalent-ionic solids are outlined. Fracture and deformation modes are analyzed in terms of classical contact mechanics. Distinctions are made between brittle, ductile and quasiplastic mechanisms in bo...
Influence of solidification structure on austenite to martensite transformation in additively manufactured hot-work tool steels [0.03%]
凝固结构对激光增材制造热作模具钢奥氏体马氏体相变的影响
Chia-Ying Chou,Niklas Holländer Pettersson,A Durga et al.
Chia-Ying Chou et al.
The microstructure of a hot-work tool steel additively manufactured using laser powder-bed fusion (L-PBF), and its response to post heat treatment, is studied in detail by microstructure characterization and computational thermodynamics and...
Cavitation-resistant intergranular precipitates enhance creep performance of θ'-strengthened Al-Cu based alloys [0.03%]
抗空化的介晶界沉淀强化了θ'-strengthened Al-Cu基合金的蠕变性能
Jovid U Rakhmonov,Sumit Bahl,Amit Shyam et al.
Jovid U Rakhmonov et al.
Tensile and compressive creep properties of a quaternary Al-Cu-Mn-Zr (ACMZ) alloy and its commercial counterpart (Al-Cu-Mn-Zr with Ni, Co and Sb additions, RR350) are investigated at 300° C. At low stresses up to 30 MPa where diffusional c...
Solute-induced strengthening during creep of an aged-hardened Al-Mn-Zr alloy [0.03%]
时效硬化Al-Mn-Zr合金蠕变过程中溶质强化行为研究
Amir R Farkoosh,David C Dunand,David N Seidman
Amir R Farkoosh
We examine the precipitation and creep behavior of Al-0.5Mn-0.02Si (at.%) alloys, with and without the L12-forming elements Zr and Er (0.09 and 0.05 at.%, respectively), utilizing isochronal aging experiments as well as compressive and tens...
Enhanced age-hardening response and creep resistance of an Al-0.5Mn-0.3Si (at.%) alloy by Sn inoculation [0.03%]
Sn注入对Al-0.5Mn-0.3Si（原子百分比）合金时效硬化和蠕变性能的影响
Amir R Farkoosh,David C Dunand,David N Seidman
Amir R Farkoosh
Precipitation-strengthening at ambient and high temperatures is examined in Al-0.5Mn-0.3Si (at.%) alloys with and without 0.02 at.% Sn micro-additions. Isochronal aging experiments reveal that Sn inoculation results in a pronounced age-hard...
Experimental and numerical study of mechanical properties of multi-phase medium-Mn TWIP-TRIP steel: influences of strain rate and phase constituents [0.03%]
多相中锰TWIP-TRIP钢的力学性能实验和数值研究：应变率和相组成的影响
J T Benzing,Y Liu,X Zhang et al.
J T Benzing et al.
In the current work we investigate the room temperature tensile properties of a medium-Mn twinning- and transformation-induced plasticity (TWIP-TRIP) steel from quasi-static to low-dynamic strain rates ( ε ˙ = 10 - 4 s - 1 to...