Dynamic Strain Aging in 321 Stainless Steel During Low Cycle Fatigue Test

doi:10.3969/j.issn.0253-374x.2014.09.014

Home > Archive>Volume 42, Issue 9, 2014 >1391-1394. DOI:10.3969/j.issn.0253-374x.2014.09.014

Dynamic Strain Aging in 321 Stainless Steel During Low Cycle Fatigue Test
DOI:
                        10.3969/j.issn.0253-374x.2014.09.014
                    
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                        SHE MengSHE Meng
Shanghai Key Laboratory of Metal Functional Meterials, Tongji University, Shanghai 201804, China
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ZHANG HuaizhengZHANG Huaizheng
Gas Turbine Design Engineering Center, Siemens China Research Institute, Shanghai 201804, China
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HE GuoqiuHE Guoqiu
Shanghai Key Laboratory of Metal Functional Meterials, Tongji University, Shanghai 201804, China
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ZHANG FanZHANG Fan
Gas Turbine Design Engineering Center, Siemens China Research Institute, Shanghai 201804, China
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Affiliation:College of material science and engineering, Tongji university ,Shanghai key laboratory of metal functional materials,Gas turbine design engineering center , Siemens China institute,College of material science and engineering, Tongji university ,Shanghai key laboratory of metal functional materials,Gas turbine design engineering center , Siemens China institute,College of material science and engineering, Tongji university ,Shanghai key laboratory of metal functional materials,College of material science and engineering, Tongji university ,Shanghai key laboratory of metal functional materials,Gas turbine design engineering center , Siemens China institute
Clc Number:TG142.2
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Abstract:

This work studied the DSA behavior during high temperature LCF testing of 321 stainless steel. Through analyzing the hysteresis loops and peak stress curves at different temperatures, the results showed that most of serrated yielding behavior appeared at the first 10 cycles of LCF and then weakened. In addition, strain amplitude also had an effect on serrated yielding amplitude. The lower the strain amplitude was, the lower the serrated yielding amplitude became, and the faster the serrated yielding behavior vanished.

Key words:321 stainless steel; dynamic strain aging; serrated yielding; low cycle fatigue

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SHE Meng, ZHANG Huaizheng, HE Guoqiu, ZHANG Fan. Dynamic Strain Aging in 321 Stainless Steel During Low Cycle Fatigue Test[J].同济大学学报(自然科学版),2014,42(9):1391~1394

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Received:October 27,2013
Revised:May 15,2014
Adopted:February 12,2014
Online: August 20,2014
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