Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys

Nguyen Q. Chinh; Maxim Yu Murashkin; Elena V. Bobruk; János L. Lábár; Jenő Gubicza; Zsolt Kovács; Anwar Q. Ahmed; Verena Maier-Kiener; Ruslan Z. Valiev

doi:10.1080/21663831.2021.1976293

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Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys

Original Report | 更新时间：2026-08-19

- Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys
- Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys
- 材料研究快报（英文） 2021年9卷第11期页码：475-482
- 作者机构：
  
  1. a Department of Materials Physics Eötvös Loránd University
  2. b Institute of Physics of Advanced Materials Ufa State Aviation Technical University Ufa Russia
  3. c Laboratory for Mechanics of Bulk Nanomaterials Saint Petersburg State University
  4. d Department of Physical Metallurgy and Materials Testing Leoben University
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2021.1976293
  中图分类号：
- 网络首发：2021-09-15，
  
  纸质出版：2021
- 稿件说明：
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Nguyen Q. Chinh, Maxim Yu Murashkin, Elena V. Bobruk, 等. Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys[J]. 材料研究快报（英文）, 2021,9(11):475-482.

Nguyen Q. Chinh, Maxim Yu Murashkin, Elena V. Bobruk, et al. Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys[J]. Materials Research Letters, 2021, 9(11): 475-482.
Nguyen Q. Chinh, Maxim Yu Murashkin, Elena V. Bobruk, 等. Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys[J]. 材料研究快报（英文）, 2021,9(11):475-482. DOI： 10.1080/21663831.2021.1976293.

Nguyen Q. Chinh, Maxim Yu Murashkin, Elena V. Bobruk, et al. Ultralow-temperature superplasticity and its novel mechanism in ultrafine-grained Al alloys[J]. Materials Research Letters, 2021, 9(11): 475-482. DOI： 10.1080/21663831.2021.1976293.

摘要

Abstract

The important benefits of ultrafine-grained (UFG) alloys for various applications stem from their enhanced superplastic properties. However

decreasing the temperature of superplasticity and providing superplastic forming at lower temperatures and higher strain rates is still a priority. Here

we disclose

for the first time

the mechanism by which grain boundary sliding and rotation are enhanced

when UFG materials have grain boundary segregation of specific alloying elements. Such an approach enables achieving superplasticity in commercial Al alloys at ultralow homologous temperatures below 0.5 (i.e. below 200°C)

which is important for developing new efficient technologies for manufacturing complex-shaped metallic parts with enhanced service properties.

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