转速对搅拌摩擦焊接搅拌区晶粒尺寸影响
基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界。沿材料物质点迹线提取出真实应变与温度历程,可进一步计算Zener-Hollomon参数并利用经验公式预测搅拌区晶粒尺寸。经计算发现较大转速工况下,搅拌区尺寸较大。搅拌区晶粒尺寸随焊接温度的增加而增加,随应变率的增加而减小。随着搅拌头转速的增加,焊接区材料温度与等效应变率均有明显增长,但是温度影响更为明显,平均晶粒尺寸随搅拌头转速的增加而增加。...
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| Published in | 材料工程 Vol. 43; no. 7; pp. 1 - 7 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
大连理工大学工业装备结构分析国家重点实验室 辽宁大连116024
2015
大连理工大学工程力学系,辽宁大连116024 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-4381 1001-4381 |
| DOI | 10.11868/j.issn.1001-4381.2015.07.001 |
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| Abstract | 基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界。沿材料物质点迹线提取出真实应变与温度历程,可进一步计算Zener-Hollomon参数并利用经验公式预测搅拌区晶粒尺寸。经计算发现较大转速工况下,搅拌区尺寸较大。搅拌区晶粒尺寸随焊接温度的增加而增加,随应变率的增加而减小。随着搅拌头转速的增加,焊接区材料温度与等效应变率均有明显增长,但是温度影响更为明显,平均晶粒尺寸随搅拌头转速的增加而增加。 |
|---|---|
| AbstractList | 基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界。沿材料物质点迹线提取出真实应变与温度历程,可进一步计算Zener-Hollomon参数并利用经验公式预测搅拌区晶粒尺寸。经计算发现较大转速工况下,搅拌区尺寸较大。搅拌区晶粒尺寸随焊接温度的增加而增加,随应变率的增加而减小。随着搅拌头转速的增加,焊接区材料温度与等效应变率均有明显增长,但是温度影响更为明显,平均晶粒尺寸随搅拌头转速的增加而增加。 TG402; 基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界.沿材料物质点迹线提取出真实应变与温度历程,可进一步计算Zener-Hollomon参数并利用经验公式预测搅拌区晶粒尺寸.经计算发现较大转速工况下,搅拌区尺寸较大.搅拌区晶粒尺寸随焊接温度的增加而增加,随应变率的增加而减小.随着搅拌头转速的增加,焊接区材料温度与等效应变率均有明显增长,但是温度影响更为明显,平均晶粒尺寸随搅拌头转速的增加而增加. |
| Author | 张昭 吴奇 张洪武 |
| AuthorAffiliation | 大连理工大学工程力学系,辽宁大连116024 大连理工大学工业装备结构分析国家重点实验室,辽宁大连116024 |
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| Author_FL | ZHANG Zhao ZHANG Hong-wu WU Qi |
| Author_FL_xml | – sequence: 1 fullname: ZHANG Zhao – sequence: 2 fullname: WU Qi – sequence: 3 fullname: ZHANG Hong-wu |
| Author_xml | – sequence: 1 fullname: 张昭 吴奇 张洪武 |
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| ClassificationCodes | TG402 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DOI | 10.11868/j.issn.1001-4381.2015.07.001 |
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| DocumentTitleAlternate | Effect of Rotating Speeds on Grain Sizes in Stirring Zone of Friction Stir Weld |
| DocumentTitle_FL | Effect of Rotating Speeds on Grain Sizes in Stirring Zone of Friction Stir Weld |
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| Keywords | 搅拌摩擦焊接 完全热力耦合模型 friction stir welding Zener-Hollomon参数 Zener-Hollomon parameter fully coupled thermo-mechanical model |
| Language | Chinese |
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| Notes | 11-1800/TB friction stir welding; Zener-Hollomon parameter; fully coupled thermo-mechanical model The flow tracers of material particles are considered to determine the boundary of the stirring zone in friction stir welding based on a fully coupled thermo mechanical model.The real strain tensors and temperature histories are given from the tracer movements to calculate the Zener-Hollomon parameters.The grain sizes can be then predicted by the empirical formation.The width of SZ on the top surface can increase with the increase of the rotation speed.The average grain size in SZ can be increased with the increase of the welding temperature and can be decreased with the increase of the strain rates.Both the temperature and the strain rates can be obviously increased with the increase of the rotating speed.But the effect of the welding temperature is more obvious,the average grain size is increased with the increase of the rotating speed. ZHANG Zhao,WU Qi,ZHANG Hong-wu （1 Department of Engineering Mechanics,Dalian U |
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| PublicationTitleAlternate | Journal of Materials Engineering |
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| PublicationYear | 2015 |
| Publisher | 大连理工大学工业装备结构分析国家重点实验室 辽宁大连116024 大连理工大学工程力学系,辽宁大连116024 |
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| Snippet | 基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界。沿材料物质点迹线提取出真实应变与温度历程,可进一步计... TG402; 基于搅拌摩擦焊接的完全热力耦合模型,跟踪材料物质点运动轨迹,划分出不同搅拌头转速下搅拌区域边界.沿材料物质点迹线提取出真实应变与温度历程,可进一步计... |
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| SubjectTerms | Zener-Hollomon参数 完全热力耦合模型 搅拌摩擦焊接 |
| Title | 转速对搅拌摩擦焊接搅拌区晶粒尺寸影响 |
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