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Si-Mn系低碳钢经不同热处理后动静态性能的对比研究
  • ISSN号：0577-6686
  • 期刊名称：机械工程学报
  • 时间：0
  • 页码：104-108
  • 分类：TG386[金属学及工艺—金属压力加工]
  • 作者机构：[1]上海大学材料科学与工程学院,上海200072
  • 相关基金：国家自然科学基金（50971137 50934011）; 国家重点基础研究发展计划（973计划 2010CB630802）资助项目
  • 相关项目：双相不锈钢中σ相析出行为的相图热力学和动力学
作者： 何忠平|LI Lin|ZHAO Jinlong|GUO Bimeng|凌云涛|何燕霖|李麟|赵金龙|郭必檬|HE Zhongping|LING Yuntao|HE Yanlin|
关键词： 相变诱发塑性钢, 双相钢, 动态性能, Transformation induced plasticity（TRIP） steel Dual phase steel Dynamic property
中文摘要：

对Si-Mn系低碳钢冷轧板进行不同热处理后分别获得相变诱发塑性（Transformation induced plasticity,TRIP）钢和双相（Dual phase,DP）钢,而后通过电子万能试验机和旋转盘式杆杆型冲击拉伸试验装置分别对其进行应变率为0.001 s–1、630 s–1、1 490 s–1和0.001 s–1、560 s–1、1 340 s–1的静态和动态拉伸试验。通过对比研究发现：TRIP钢和DP钢的屈服强度、抗拉强度随着应变率的增加而不断增大;高速率下变形局部化导致动态下的DP钢和TRIP钢均匀伸长率都比静态下小。高速率下的绝热温升效应使得DP钢1 340 s–1的均匀伸长率和断裂伸长率都比560 s–1的要大,TRIP钢1 490 s–1也比630 s–1的要大。由于DP钢的绝热温升效应大于变形局部化效应,使得动态下DP钢的断裂伸长率比静态下要大;而TRIP钢因为有残余奥氏体转变马氏体现象,绝热温升效应远小于变形局部化效应,使得动态下TRIP钢的断裂伸长率比静态下要小。

英文摘要：

The specimens of Si-Mn low carbon steel are processed into transformation induced plasticity（TRIP） and dual phase（DP） steel separately by different heat treatment.Then strain rate 0.001 s–1,630 s–1,1 490 s–1and 0.001 s–1,560 s–1,1 340 s–1 are studied by electronic universal testing machine and rotation disk bar-bar tensile impact apparatus separately.The results show that：The yield strength and tensile strength of TRIP and DP steel increase with increasing strain rate.Deformation localization in high strain rate leads to lower uniform elongation of TRIP and DP steel comparing with static tensile.Adiabatic heating in high strain rate causes uniform elongation and fracture elongation of TRIP steel in 1 490 s–1 and DP steel 1 340 s–1 are higher than that of TRIP steel in 630 s–1 and DP steel 560 s–1.The fracture elongation of DP steel in dynamic is bigger than that in static because adiabatic heating plays a leading role.TRIP steel is opposite since residual austenite transforms martensite.

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期刊信息
  • 《机械工程学报》
  • 中国科技核心期刊
  • 主管单位:中国科学技术协会
  • 主办单位:中国机械工程学会
  • 主编：宋天虎
  • 地址：北京百万庄大街22号
  • 邮编：100037
  • 邮箱：bianbo@cjmenet.com
  • 电话：010-88379907
  • 国际标准刊号：ISSN：0577-6686
  • 国内统一刊号：ISSN：11-2187/TH
  • 邮发代号:2-362
  • 获奖情况:
  • 中国期刊奖,“中国期刊方阵”双高期刊
  • 国内外数据库收录:
  • 俄罗斯文摘杂志,美国化学文摘（网络版）,荷兰文摘与引文数据库,美国工程索引,美国剑桥科学文摘,日本日本科学技术振兴机构数据库,中国中国科技核心期刊,中国北大核心期刊（2004版）,中国北大核心期刊（2008版）,中国北大核心期刊（2011版）,中国北大核心期刊（2014版）,中国北大核心期刊（2000版）
  • 被引量:58603