Superplasticity in Advanced Materials最新文献_第2页

Exploring the effects of repetitive corrugation and strengthening on alloy A5083 using X-ray diffraction techniques 利用x射线衍射技术探讨A5083合金重复波纹强化的影响

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/97816449025615-42

Carlos Alberto De la Trinidad, I. A. Figueroa, José María Cabrera, G. Gonzalez

{"title":"Exploring the effects of repetitive corrugation and strengthening on alloy A5083 using X-ray diffraction techniques","authors":"Carlos Alberto De la Trinidad, I. A. Figueroa, José María Cabrera, G. Gonzalez","doi":"10.21741/97816449025615-42","DOIUrl":"https://doi.org/10.21741/97816449025615-42","url":null,"abstract":"Abstract. Aluminum alloys are highly versatile materials and their behavior can be improved by severe plastic deformation. X-Ray Diffraction (XRD) is a key tool for studying the microstructural changes and the evolution of the crystalline structure during this process. This combination of processing techniques helped the development of high-performance aluminum alloys for various industrial applications. The objective was to determine a heat treatment to promote a new crystallographic texture of AA5083 under a severe plastic deformation process. The determination of this thermal ratio, as well as the crystallographic characterization of the material, were studied through XRD, thermo-diffraction, Rietveld analysis, and pole figures (PF). The results showed that using a partial recrystallization heat treatment combined with the RCS process favors obtaining a characteristic recrystallization and deformation texture (cube and brass component). Furthermore, the evolution of diffraction peaks intensities at different temperatures confirm that recrystallization takes place during the process. Finally, the phases present in the A5083 alloy were determined by XRD.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134331506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low-temperature superplasticity of Si-added medium-Mn steel 掺硅中锰钢的低温超塑性

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-18

H-.B. Jeong

引用次数: 0

Mechanical behavior and microstructure evolution of Ti-6.5Al-2Zr-1Mo-1V/TiB metal-matrix composites during deformation Ti-6.5Al-2Zr-1Mo-1V/TiB金属基复合材料变形过程力学行为及显微组织演变

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-32

Ozerov Maxim, Galtsev Alexander, Zherebtsov Sergey

引用次数: 0

Warm tensile properties of low-alloy TRIP steel warm-rolled just prior to isothermal holding treatment 在等温保温处理之前热轧低合金TRIP钢的热拉伸性能

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-31

Katsumi Hattori, Genta Kojima, J. Kobayashi, G. Itoh, Shigeru Kuramoto, Tomohiko Hojo

{"title":"Warm tensile properties of low-alloy TRIP steel warm-rolled just prior to isothermal holding treatment","authors":"Katsumi Hattori, Genta Kojima, J. Kobayashi, G. Itoh, Shigeru Kuramoto, Tomohiko Hojo","doi":"10.21741/9781644902615-31","DOIUrl":"https://doi.org/10.21741/9781644902615-31","url":null,"abstract":"Abstract. Low-alloy TRIP steel sheets with ultra-high-strength that utilize transformation-induced plasticity of retained austenite have high strength and ductility. In this study, low-alloy TRIP steel sheets with thermo-mechanical treatment with warm rolling were prepared, and the effects of warm rolling on tensile properties were investigated. A hot-rolled sheet of the steel with Ms of 418.5°C was austenized and then quenched in a salt bath kept at 450°C. Two specimens of the sheet were warm-rolled by 40 and 60% and then isothermally held at 350℃ for 1ks. For comparison, a specimen was directly isothermally heat-treated at 350°C for 1ks. The three specimens were subjected to microstructural characterizations and tensile tests at temperatures ranging from 25 to 300°C. It was confirmed that the warm rolling increases the ductility/strength balance. The X-ray diffraction showed that the warm rolling causes an increase in volume fraction of the retained austenite, while its stability against the tensile deformation was somewhat complicated. The effect of the temperature and rolling reduction on the uniform elongation, which is the parameter mostly affected by TRIP, was successfully understood in terms of the volume fraction and the stability of the retained austenite.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126559194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Friction stir processing to improve grain refinement and superplasticity of Al-Mg-Mn-Cr alloy 搅拌摩擦处理改善Al-Mg-Mn-Cr合金的晶粒细化和超塑性

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-19

A. Kishchik, Ahmed O. Mosleh, O. Yakovtseva, A. Kotov, A. Mikhaylovskaya

引用次数: 0

Development of asymmetric cold rolling technology of high-strength steel grades in order to exclude intermediate annealing operations 开发高强度钢种的非对称冷轧工艺，以避免中间退火操作

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-40

A. Pesin, Georgy Raab, Alexey Sverchkov, D. Pustovoytov, Gennady Kornilov, Alexey Bochkarev, Ilya Pesin, Leonid Nosov

{"title":"Development of asymmetric cold rolling technology of high-strength steel grades in order to exclude intermediate annealing operations","authors":"A. Pesin, Georgy Raab, Alexey Sverchkov, D. Pustovoytov, Gennady Kornilov, Alexey Bochkarev, Ilya Pesin, Leonid Nosov","doi":"10.21741/9781644902615-40","DOIUrl":"https://doi.org/10.21741/9781644902615-40","url":null,"abstract":"Abstract. The technological process of manufacturing cold-rolled strip with a thickness of 0.5-1.5 mm from high-strength steel grades on cold rolling mills can consist of 2 or even 3 operating cycles \"cold rolling - intermediate annealing\". This is due to a significant hardening of such steels during cold rolling and, as a result, limitations on the maximum allowable rolling forces. Each additional operating cycle \"cold rolling - intermediate annealing\" significantly increases production costs and reduces the productivity of the technological process. One of the promising ways to reduce the rolling force is the asymmetric rolling. Rolling at different circumferential speeds of work rolls driven by two independent motors is the most suitable way to implement asymmetric rolling technology in industry. The paper presents data on the operation of the main electric drives of a five-stand industrial mill during symmetric and asymmetric cold rolling. Speed ratio of the work rolls was varied in the range from 1.0 to 1.5. Electrical and power parameters were calculated, measured and compared. Based on numerical simulation, laboratory and industry experiments it was shown that the asymmetric cold rolling makes it possible to reduce the rolling forces, increase the thickness reduction per pass and, as a result, obtain a thinner strip without the use of intermediate annealing.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114877105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Grain boundary sliding at low temperatures 低温下晶界滑动

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-26

R. Figueiredo

{"title":"Grain boundary sliding at low temperatures","authors":"R. Figueiredo","doi":"10.21741/9781644902615-26","DOIUrl":"https://doi.org/10.21741/9781644902615-26","url":null,"abstract":"Abstract. Grain boundary sliding plays a key role on the high temperature deformation of fine grained materials. This mechanism is related to a high strain rate sensitivity of approximately 0.5 and usually gives rise to high superplastic elongations. The rate controlling equation for the mechanism of grain boundary sliding has shown good agreement with experimental data for multiple materials, with different grain sizes and tested at different strain rates. However, the predictive ability of the rate controlling equation seems to deteriorate at low temperatures. Although there are experimental evidences of high strain-rate sensitivities in ultrafine grained materials tested at low temperatures, this parameter does not reach values near 0.5 and also there seems to be disagreement in stress level in many conditions. The present overview evaluates the occurrence of grain boundary sliding in ultrafine grained materials at low temperatures considering an adapted rate controlling equation which display good agreement with experimental data. A gradual transition from grain refinement softening at high temperature to grain refinement hardening at low temperatures and a gradual increase in strain rate sensitivity with increasing temperature are observed.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124508641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ultra-severe plastic deformation for room-temperature superplasticity and superfunctionality 室温超塑性和超功能性的超剧烈塑性变形

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-4

K. Edalati

引用次数: 0

Hot deformation of ultrafine-grained TiC-reinforced AlCrFeNbMoTiV refractory high entropy alloys 超细晶tic增强AlCrFeNbMoTiV难熔高熵合金的热变形

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-28

P. Martín

引用次数: 0

FEM simulation of dynamic recrystallization during asymmetric hot rolling of high-speed steel M2 M2高速钢非对称热轧动态再结晶的有限元模拟

Superplasticity in Advanced Materials Pub Date : 2023-07-10 DOI: 10.21741/9781644902615-34

A. Pesin, D. Pustovoytov, Ilya Pesin, Hailiang Yu, Puneet Tandon, Harshal Y. Shahare, A. Dubey, Leonid Nosov

{"title":"FEM simulation of dynamic recrystallization during asymmetric hot rolling of high-speed steel M2","authors":"A. Pesin, D. Pustovoytov, Ilya Pesin, Hailiang Yu, Puneet Tandon, Harshal Y. Shahare, A. Dubey, Leonid Nosov","doi":"10.21741/9781644902615-34","DOIUrl":"https://doi.org/10.21741/9781644902615-34","url":null,"abstract":"Abstract. Dynamic recrystallization of high-speed steel (HSS) M2 occurs through a discontinuous mechanism, involving nucleation and growth of strain-free grains. The initiation and completion of discontinuous dynamic recrystallization (dDRX) must be carried out in a single rolling pass. The time for 99% dDRX depends on the critical strain, strain rate and equivalent strain, that generated in the workpiece material in a single rolling pass. The level of equivalent strain plays a key role in terms of the possibility to complete dDRX. High equivalent strain in conventional hot rolling for a single pass is limited by too high rolling forces. High equivalent strain at low rolling forces can be achieved by asymmetric hot rolling. Asymmetric rolling is a process based on purposefully created differences in the circumferential speeds of the work rolls. For such a process, a degree of asymmetry is defined by a speed ratio of the work rolls. The speed ratio is one of the most important parameters of the process, affecting the level of equivalent strain and the rolling force. In this work the single-pass asymmetric hot rolling process of HSS M2 at different temperatures in the range 850-1150 °C was simulated by FEM and JMAK model. The effects of speed ratio and thickness reduction on equivalent strain and rolling force were investigated. The effects of equivalent strain, strain rate and temperature on the recrystallized volume fraction and the average size of a dynamically recrystallized grains of HSS M2 are presented. Symmetric and asymmetric hot rolling processes are compared.","PeriodicalId":242571,"journal":{"name":"Superplasticity in Advanced Materials","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130754694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0