| Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP | |
| Alternative Title | Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP |
| Yan Ying1; Qi Yue1; Jiang QingWei1; Li XiaoWu1 | |
| 2015 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Volume | 28Issue:5Pages:531-541 |
| Abstract | To explore the temperature dependence of deformation behavior of BCC structural materials and the relevant effect of pre-annealing, commercially pure iron (CP Fe) produced by equal-channel angular pressing (ECAP) is selected as the experimental material. The influences of deformation temperature T and pre-annealing on deformation behavior, surface deformation characteristics and substructures of ECAP Fe were systematically studied. The results show that ECAP Fe undergoes a remarkable strain softening stage after a rapid strain hardening during uniaxial compression, and the softening degree and the yield strength sigma(YS) first decrease and then increase with raising temperature. Pre-annealing at 400 degrees C effectively weakens the strain softening degree and increases sigma(YS). To understand the influence of deformation temperature on deformation behavior, as well as the relevant pre-annealing effect, deformation and damage characteristics and dislocation structures are studied in detail. In a word, the strain softening of ECAP Fe is associated not only with internal structural instability, but also with temperature, and pre-annealing at 400 degrees C improves high-temperature mechanical properties of ECAP Fe. |
| Other Abstract | To explore the temperature dependence of deformation behavior of BCC structural materials and the relevant effect of pre-annealing, commercially pure iron (CP Fe) produced by equal-channel angular pressing (ECAP) is selected as the experimental material. The influences of deformation temperature T and pre-annealing on deformation behavior, surface deformation characteristics and substructures of ECAP Fe were systematically studied. The results show that ECAP Fe undergoes a remarkable strain softening stage after a rapid strain hardening during uniaxial compression, and the softening degree and the yield strength σ_(YS) first decrease and then increase with raising temperature. Pre-annealing at 400 ℃ effectively weakens the strain softening degree and increases σ_(YS). To understand the influence of deformation temperature on deformation behavior, as well as the relevant pre-annealing effect, deformation and damage characteristics and dislocation structures are studied in detail. In a word, the strain softening of ECAP Fe is associated not only with internal structural instability, but also with temperature, and pre-annealing at 400 ℃ improves high-temperature mechanical properties of ECAP Fe. |
| Keyword | ULTRAFINE-GRAINED COPPER SEVERE PLASTIC-DEFORMATION MECHANICAL-PROPERTIES DAMAGE BEHAVIOR TITANIUM METALS STABILITY FEATURES ECAP Fe Uniaxial compression High-temperature mechanical behavior Pre-annealing Deformation features Microstructure |
| Indexed By | CSCD |
| Language | 英语 |
| Funding Project | [National Natural Science Foundation of China] ; [Specialized Research Fund for the Doctoral Program of Higher Education of China] ; [Fundamental Research Funds for the Central Universities of China] |
| CSCD ID | CSCD:5427179 |
| Citation statistics |
Cited Times:3[CSCD]
[CSCD Record]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/146894 |
| Collection | 中国科学院金属研究所 |
| Affiliation | 1.中国科学院金属研究所 2.Kunming Univ Sci & Technol, Coll Materials Sci & Engn, Kunming 650093, Peoples R China 3.上海市地震局 |
| Recommended Citation GB/T 7714 | Yan Ying,Qi Yue,Jiang QingWei,et al. Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2015,28(5):531-541. |
| APA | Yan Ying,Qi Yue,Jiang QingWei,&Li XiaoWu.(2015).Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP.ACTA METALLURGICA SINICA-ENGLISH LETTERS,28(5),531-541. |
| MLA | Yan Ying,et al."Temperature-Dependent Compressive Deformation Behavior of Commercially Pure Iron Processed by ECAP".ACTA METALLURGICA SINICA-ENGLISH LETTERS 28.5(2015):531-541. |
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