EngRN: Metals & Alloys (Topic)最新文献_第6页

Time Sequential Observation of Abnormally Growing Goss Grains in Fe-3%Si Steel Fe-3%Si钢中Goss晶粒异常生长的时间序列观察

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3507453

Tae-young Kim, Hyo-kyu Kim, Yong-kwon Jeong, Yong-Keun Ahn, H. Shim, N. Hwang

引用次数: 0

Geometrical Thermodynamic Investigation on Fe-Co-Ni(Mn-Si) x High Entropy Alloys And Correlation with Their Structural and Magnetic Properties Fe-Co-Ni(Mn-Si) x高熵合金的几何热力学研究及其与结构和磁性能的关系

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3746804

P. Sahu, S. Samal, Vinod Kumar

{"title":"Geometrical Thermodynamic Investigation on Fe-Co-Ni(Mn-Si) x High Entropy Alloys And Correlation with Their Structural and Magnetic Properties","authors":"P. Sahu, S. Samal, Vinod Kumar","doi":"10.2139/ssrn.3746804","DOIUrl":"https://doi.org/10.2139/ssrn.3746804","url":null,"abstract":"In the present study, different symmetrical and asymmetrical geometrical thermodynamic models such as Muggianu, Lück chou, Kohler, Colinet, Hillert, Toop, General solution model (GSM) were modelled by using the Redlich-Kister formalism for all the possible binary alloy system and then applied to FeCoNi(Mn-Si)x (x=0.0,0.1,0.25,0.5,0.75,1.0) HEAs at 1273 K (FCC phase). The results revealed that asymmetrical GSM model with a similarity coefficient ξ(ij)(k) of ~0.5 shows maximum negative excess Gibbs free energy (G1-2-E3-4-5) and associated activity coefficients (Υa) decreases with the elevation of excess energy as well as Mn-Si content. The Miedema semi-empirical model was also evaluated in order to confirm the G1-2-E3-4-5 and associated Υα greatly influenced by a high negative value of enthalpy of mixing (ΔΗmix) and melting temperature (Tm). These negative value of ΔΗmix and G1-2-3E-4-5 plays a significant role during the formation of the solid solution produced by non-equilibrium process i.e. mechanical alloying (MA). Therefore, an experimental approach has been carried out in the proposed alloy system on the basis of phase evolution, physical parameters such as lattice parameter (LP), crystallite size (Dcrystal), microstrain (εs) and dislocation density (ρdis), microstructure and magnetic properties were performed at 300 K.","PeriodicalId":438337,"journal":{"name":"EngRN: Metals & Alloys (Topic)","volume":"39 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133023681","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

CoNiFeNb 0.45 Eutectic Medium Entropy Alloy with Excellent Mechanical Properties and Corrosion Resistance CoNiFeNb 0.45共晶中熵合金，具有优异的机械性能和耐腐蚀性

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3414018

X. An, C. Chu, H. Zhao, T. Dai, T. Lu, Z.H. Huang, C. Guo, P. Chu

引用次数: 0

Characteristic Structural Motifs in Metallic Liquids and Their Relationship to Glass Forming Ability 金属液体中的特征结构基元及其与玻璃成形能力的关系

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3910591

W. P. Weeks, K. Flores

{"title":"Characteristic Structural Motifs in Metallic Liquids and Their Relationship to Glass Forming Ability","authors":"W. P. Weeks, K. Flores","doi":"10.2139/ssrn.3910591","DOIUrl":"https://doi.org/10.2139/ssrn.3910591","url":null,"abstract":"Despite intense interest in and research on metallic glasses, one question remains predominantly unanswered: Why are certain alloys better glass-formers than others? Here, we use geometric alignment and density-based clustering algorithms to quantitatively describe the atomic structure and the degree of order in the simulated liquid state for four binary alloy systems. We show that each liquid is comprised of a surprisingly small number of characteristic atomic clusters (6-8 motifs in the systems studied), and that measurable order in metallic alloys extends far into the liquid state. The data suggests the extent of order is inversely correlated to the experimentally-observed glass-forming ability (GFA). The broad applicability of this technique to both good glass-forming systems (Cu-Zr, Ni-Nb) and poor glass-forming systems (Al-Sm, Au-Si) suggests that order in the liquid could be used as a coarse identifier of high-GFA compositions within an alloy system. This method both improves our fundamental understanding of why certain alloys are better glass-formers than others and provides an interesting a priori method for identification of potential glass-forming alloys.","PeriodicalId":438337,"journal":{"name":"EngRN: Metals & Alloys (Topic)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115465667","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

Biodegradable Zn-Mn Alloys with Suitable Mechanical Strength, High Plasticity, and Good Osteogenic Activities for Orthopedic Applications 具有合适的机械强度、高塑性和良好成骨活性的生物可降解锌锰合金

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3507475

Bo Jia, Hongtao Yang, Yu Han, Zechuan Zhang, X. Qu, Yifu Zhuang, Qiang Wu, Yufeng Zheng, K. Dai

{"title":"Biodegradable Zn-Mn Alloys with Suitable Mechanical Strength, High Plasticity, and Good Osteogenic Activities for Orthopedic Applications","authors":"Bo Jia, Hongtao Yang, Yu Han, Zechuan Zhang, X. Qu, Yifu Zhuang, Qiang Wu, Yufeng Zheng, K. Dai","doi":"10.2139/ssrn.3507475","DOIUrl":"https://doi.org/10.2139/ssrn.3507475","url":null,"abstract":"In recent years, Zn-based materials provide a new option as biodegradable metals for orthopedic applications. To improve the low strength and brittle nature of pure Zn, small amounts of alloying element Mn (0.1, 0.4 and 0.8 wt. %) were added into Zn to fabricate binary Zn-Mn alloys. An extremely high elongation (83.96 ± 2.36%) was achieved in the resulting Zn-0.8wt.%Mn alloy. Moreover, Zn-Mn alloys displayed significantly improved cytocompatibility as compared to pure Zn, according to cell proliferation and morphology analyses. More importantly, a significantly improved osteogenic activity was verified after adding Mn regarding ALP activity and osteogenic expression. Furthermore, Zn-0.8wt.%Mn alloy scaffolds were implanted into the rat femoral condyle for bone defect repairing with pure Ti as control. Enhanced osteogenic activities were confirmed in Zn-0.8Mn alloy in contrast to pure Ti based on Micro-CT and histological results, and favorable in vivo biosafety of Zn-0.8Mn alloy was verified by H&E staining and blood tests. The exceptional mechanical performance and excellent osteogenic capability render Zn-Mn alloy a promising candidate material in the treatment of bone defects or fracture repair.","PeriodicalId":438337,"journal":{"name":"EngRN: Metals & Alloys (Topic)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134174879","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

Thermal-Ageing and Ion-Irradiation Enhanced Intergranular P Segregation in Low Alloy Steel Welds 热时效和离子辐照增强低合金钢焊缝晶间P偏析

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3659823

Leifeng Zhang, B. Radiguet, P. Todeschini, C. Domain, Yang Shen, P. Pareige

引用次数: 1

On the Improved Ductility of Mg-2Zn-0.3ca-0.2Ce-0.1Mn Alloy Mg-2Zn-0.3ca-0.2Ce-0.1Mn合金塑性的提高

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3797426

Dexin Zhao, Renhai Shi, P. Evans, A. Luo, K. Xie

引用次数: 0

Crystallographic Orientation Dependence of Deformation-Induced Martensitic Transformation of 1.3 GPa-Class 0.6%C Bainitic Steel with Retained Austenite 含残余奥氏体的1.3 gpa级0.6%C贝氏体钢变形诱发马氏体相变的晶体取向依赖性

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3692032

R. Ueji, A. Shibata, K. Ushioda, Y. Kimura, T. Ohmura, T. Inoue

引用次数: 3

Simultaneous Enhancement of Tensile Strength and Ductility in Commercial-Purity Aluminum (A1050) by Accumulative Roll Bonding (ARB) 用累积辊焊(ARB)同时提高商用纯铝(A1050)的抗拉强度和延展性

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3882696

Yongpeng Tang, T. Fujii, S. Hirosawa, K. Matsuda, D. Terada, Z. Horita

引用次数: 0

Omega Transition Accompanied by Mechanical Induced Twinned Martensite in Medium Manganese Steels 中锰钢中伴随机械诱导孪晶马氏体的ω转变

EngRN: Metals & Alloys (Topic) Pub Date : 1900-01-01 DOI: 10.2139/ssrn.3606828

P. Du, C. Lei, D. Wu

引用次数: 0