Article(id=1236333415780380830, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236333405122646435, articleNumber=null, orderNo=null, doi=10.3969/j.issn.0253-6099.2023.01.029, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1661443200000, receivedDateStr=2022-08-26, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1772694456285, onlineDateStr=2026-03-05, pubDate=1675180800000, pubDateStr=2023-02-01, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1772694456285, onlineIssueDateStr=2026-03-05, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1772694456285, creator=13701087609, updateTime=1772694456285, updator=13701087609, issue=Issue{id=1236333405122646435, tenantId=1146029695717560320, journalId=1235980550691926019, year='2023', volume='43', issue='1', pageStart='1', pageEnd='159', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1772694453745, creator=13701087609, updateTime=1772694772892, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1236334743785099547, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236333405122646435, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1236334743785099548, tenantId=1146029695717560320, journalId=1235980550691926019, issueId=1236333405122646435, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=133, endPage=136, ext={EN=ArticleExt(id=1236333416061399224, articleId=1236333415780380830, tenantId=1146029695717560320, journalId=1235980550691926019, language=EN, title=Effect of Strain Rates on Adiabatic Shear Sensitivity of Al0.4CoCrFeNi High-Entropy Alloy, columnId=1236276108207902848, journalTitle=Mining and Metallurgical Engineering, columnName=MATERIALS, runingTitle=null, highlight=null, articleAbstract=

The cap specimens of Al0.4 CoCrFeNi high-entropy alloy were dynamically loaded with a split Hopkinson pressure bar at room temperature, for studying the adiabatic shear sensitivity of Al0.4CoCrFeNi high-entropy alloy at different strain rates. The results show that the grain size of Al0.4CoCrFeNi high entropy alloy before and after dynamic loading is about 100 μm and 100 nm, respectively, with about three orders of magnitude difference. The Al0.4CoCrFeNi high entropy alloy, with a finer grain size after dynamic loading, has lower adiabatic shear sensitivity, which will increase with the increase of strain rate. Within the range in the experiment, the adiabatic shear sensitivity reaches the highest when the strain rate is 3 360 s-1, forming an adiabatic shear band that is about 2 μm wide and has an angle of 45° with the dynamic loading direction. At this moment, both the critical strain value and the formation energy per unit volume of adiabatic shear are the smallest. The Al0.4CoCrFeNi high-entropy alloy undergoes significant grain refinement during high strain rate deformation. And the adiabatic shear of Al0.4CoCrFeNi high-entropy alloy under dynamic loading is attributed to the thermal-viscoplastic constitutive instability of the material.

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在室温下利用分离式霍普金森压杆对Al0.4CoCrFeNi高熵合金帽型试样进行动态加载,研究了不同应变速率下Al0.4CoCrFeNi高熵合金的绝热剪切敏感性。结果表明,动态加载前后Al0.4CoCrFeNi高熵合金的晶粒尺寸分别约为100 μm、100 nm,相差约3个数量级,动态加载后细小的晶粒尺寸使Al0.4CoCrFeNi高熵合金具有更低的绝热剪切敏感性;Al0.4CoCrFeNi高熵合金绝热剪切敏感性随应变速率增加而增加,在实验范围内,应变速率3 360 s-1时绝热剪切敏感性最高,产生了与动态加载方向成45°、宽约2 μm的绝热剪切带,此时临界应变值和单位体积绝热剪切形成能也最小。Al0.4CoCrFeNi高熵合金在高应变率变形过程中晶粒发生明显细化。Al0.4 CoCrFeNi高熵合金在动态加载下的绝热剪切归结为材料的热-黏塑性本构失稳。

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姜丽红(1983—),女,江西南昌人,博士,副教授,主要研究方向为材料动态行为。
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刘小刚(1996—),男,甘肃天水人,硕士研究生,主要研究方向为材料动态行为。

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刘小刚(1996—),男,甘肃天水人,硕士研究生,主要研究方向为材料动态行为。

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应变速率对Al0.4CoCrFeNi高熵合金绝热剪切敏感性的影响
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刘小刚 , 姜丽红 , 刘征 , 杨亮 , 郭正华
矿冶工程杂志 | 材料 2023,43(1): 133-136
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矿冶工程杂志 | 材料 2023, 43(1): 133-136
应变速率对Al0.4CoCrFeNi高熵合金绝热剪切敏感性的影响
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刘小刚, 姜丽红, 刘征, 杨亮, 郭正华
作者信息
  • 南昌航空大学 航空制造工程学院,江西 南昌 330063
  • 刘小刚(1996—),男,甘肃天水人,硕士研究生,主要研究方向为材料动态行为。

通讯作者:

姜丽红(1983—),女,江西南昌人,博士,副教授,主要研究方向为材料动态行为。
Effect of Strain Rates on Adiabatic Shear Sensitivity of Al0.4CoCrFeNi High-Entropy Alloy
Xiaogang LIU, Lihong JIANG, Zheng LIU, Liang YANG, Zhenghua GUO
Affiliations
  • School of Aeronautical Manufacturing Engineering, Nanchang Hangkong University, Nanchang 330063, Jiangxi, China
出版时间: 2023-02-01 doi: 10.3969/j.issn.0253-6099.2023.01.029
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在室温下利用分离式霍普金森压杆对Al0.4CoCrFeNi高熵合金帽型试样进行动态加载,研究了不同应变速率下Al0.4CoCrFeNi高熵合金的绝热剪切敏感性。结果表明,动态加载前后Al0.4CoCrFeNi高熵合金的晶粒尺寸分别约为100 μm、100 nm,相差约3个数量级,动态加载后细小的晶粒尺寸使Al0.4CoCrFeNi高熵合金具有更低的绝热剪切敏感性;Al0.4CoCrFeNi高熵合金绝热剪切敏感性随应变速率增加而增加,在实验范围内,应变速率3 360 s-1时绝热剪切敏感性最高,产生了与动态加载方向成45°、宽约2 μm的绝热剪切带,此时临界应变值和单位体积绝热剪切形成能也最小。Al0.4CoCrFeNi高熵合金在高应变率变形过程中晶粒发生明显细化。Al0.4 CoCrFeNi高熵合金在动态加载下的绝热剪切归结为材料的热-黏塑性本构失稳。

绝热剪切敏感性  /  应变速率  /  高熵合金  /  绝热剪切带(ASB)

The cap specimens of Al0.4 CoCrFeNi high-entropy alloy were dynamically loaded with a split Hopkinson pressure bar at room temperature, for studying the adiabatic shear sensitivity of Al0.4CoCrFeNi high-entropy alloy at different strain rates. The results show that the grain size of Al0.4CoCrFeNi high entropy alloy before and after dynamic loading is about 100 μm and 100 nm, respectively, with about three orders of magnitude difference. The Al0.4CoCrFeNi high entropy alloy, with a finer grain size after dynamic loading, has lower adiabatic shear sensitivity, which will increase with the increase of strain rate. Within the range in the experiment, the adiabatic shear sensitivity reaches the highest when the strain rate is 3 360 s-1, forming an adiabatic shear band that is about 2 μm wide and has an angle of 45° with the dynamic loading direction. At this moment, both the critical strain value and the formation energy per unit volume of adiabatic shear are the smallest. The Al0.4CoCrFeNi high-entropy alloy undergoes significant grain refinement during high strain rate deformation. And the adiabatic shear of Al0.4CoCrFeNi high-entropy alloy under dynamic loading is attributed to the thermal-viscoplastic constitutive instability of the material.

adiabatic shear sensitivity  /  strain rate  /  high-entropy alloy  /  adiabatic shear band (ASB)
刘小刚, 姜丽红, 刘征, 杨亮, 郭正华. 应变速率对Al0.4CoCrFeNi高熵合金绝热剪切敏感性的影响. 矿冶工程杂志, 2023 , 43 (1) : 133 -136 . DOI: 10.3969/j.issn.0253-6099.2023.01.029
Xiaogang LIU, Lihong JIANG, Zheng LIU, Liang YANG, Zhenghua GUO. Effect of Strain Rates on Adiabatic Shear Sensitivity of Al0.4CoCrFeNi High-Entropy Alloy[J]. Mining and Metallurgical Engineering, 2023 , 43 (1) : 133 -136 . DOI: 10.3969/j.issn.0253-6099.2023.01.029
  • 江西省重大科技研发专项项目(20194ABC28001)
  • 南昌航空大学研究生创新专项资金项目(2030009412138)
2023年第43卷第1期
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doi: 10.3969/j.issn.0253-6099.2023.01.029
  • 接收时间:2022-08-26
  • 首发时间:2026-03-05
  • 出版时间:2023-02-01
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  • 收稿日期:2022-08-26
基金
江西省重大科技研发专项项目(20194ABC28001)
南昌航空大学研究生创新专项资金项目(2030009412138)
作者信息
    南昌航空大学 航空制造工程学院,江西 南昌 330063

通讯作者:

姜丽红(1983—),女,江西南昌人,博士,副教授,主要研究方向为材料动态行为。
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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