基于40Cr高温动态力学性能的磨削表面动态再结晶行为

TH164; 通过分离式霍普金森压杆(SHPB)实验得到了40Cr合金钢在高温高应变率下真应力-真应变曲线,据此确定了材料发生动态再结晶的临界条件.采用解析法和实验法分别求解了磨削强化层的温度场和塑性应变场分布.结果表明,磨削强化层在磨削深度方向具有较大的温度和塑性应变梯度;150μm强化层内会发生奥氏体转变;磨削表面最高温度可达1060℃.在磨削亚表面60μm内会产生剧烈的塑性变形,达到了再结晶的临界条件.较大的磨削深度使磨削强化层塑性应变增大,再结晶现象越充分,微观组织细化程度越高....

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Published in东北大学学报（自然科学版） Vol. 42; no. 8; pp. 1120 - 1126
Main Authors 姚云龙, 修世超, 孙聪, 洪远
Format Journal Article
LanguageChinese
Published 东北大学机械工程与自动化学院,辽宁沈阳 110819 01.08.2021
Subjects
磨削强化
40Cr
动态再结晶
分离式霍普金森压杆实验
微观组织
Online AccessGet full text
ISSN1005-3026
DOI10.12068/j.issn.1005-3026.2021.08.009

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Abstract TH164; 通过分离式霍普金森压杆(SHPB)实验得到了40Cr合金钢在高温高应变率下真应力-真应变曲线,据此确定了材料发生动态再结晶的临界条件.采用解析法和实验法分别求解了磨削强化层的温度场和塑性应变场分布.结果表明,磨削强化层在磨削深度方向具有较大的温度和塑性应变梯度;150μm强化层内会发生奥氏体转变;磨削表面最高温度可达1060℃.在磨削亚表面60μm内会产生剧烈的塑性变形,达到了再结晶的临界条件.较大的磨削深度使磨削强化层塑性应变增大,再结晶现象越充分,微观组织细化程度越高.
AbstractList TH164; 通过分离式霍普金森压杆(SHPB)实验得到了40Cr合金钢在高温高应变率下真应力-真应变曲线,据此确定了材料发生动态再结晶的临界条件.采用解析法和实验法分别求解了磨削强化层的温度场和塑性应变场分布.结果表明,磨削强化层在磨削深度方向具有较大的温度和塑性应变梯度;150μm强化层内会发生奥氏体转变;磨削表面最高温度可达1060℃.在磨削亚表面60μm内会产生剧烈的塑性变形,达到了再结晶的临界条件.较大的磨削深度使磨削强化层塑性应变增大,再结晶现象越充分,微观组织细化程度越高.
Author 姚云龙
孙聪
修世超
洪远
AuthorAffiliation 东北大学机械工程与自动化学院,辽宁沈阳 110819
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HONG Yuan
YAO Yun-long
XIU Shi-chao
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DocumentTitle_FL Dynamic Recrystallization Behavior of Grinding Surface Based on 40Cr High Temperature Dynamic Mechanical Properties
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Issue 8
Keywords 磨削强化
40Cr
动态再结晶
分离式霍普金森压杆实验
微观组织
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Snippet TH164; 通过分离式霍普金森压杆(SHPB)实验得到了40Cr合金钢在高温高应变率下真应力-真应变曲线,据此确定了材料发生动态再结晶的临界条件.采用解析法和实验法分别求解了磨...
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Title 基于40Cr高温动态力学性能的磨削表面动态再结晶行为
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