| Cr-Ni-Mo铸造热作模具钢热机械疲劳行为 |
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| 引用本文： | 方健儒,张瑞卿,赵玉谦,姜启川.Cr-Ni-Mo铸造热作模具钢热机械疲劳行为[J].金属热处理,2003,28(6):13-16. |
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| 作者姓名： | 方健儒 张瑞卿 赵玉谦 姜启川 |
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| 作者单位： | 1. 一汽铸造有限公司,铸造模具厂,吉林,长春,130011
2. 吉林大学,材料科学与工程学院,吉林,长春,130025 |
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| 基金项目： | 国家自然科学基金 (No 5 9771 0 0 3)，国家计委产业化前期关键技术及成套设备项目 ([1 999]31 7) |
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| 摘 要： | 研究了新型Cr—Ni—Mo铸造热作模具钢在应力控制下的热机械疲劳寿命、应力应变响应以及疲劳断裂特征。试验中发现，在相同的应力幅下，同相热机械疲劳寿命低于上限温度的等温疲劳寿命。疲劳过程中热作模具钢发生了循环软化和沿着拉伸方向的循环蠕变，热作模具钢的热机械疲劳裂纹往往穿晶萌生，沿晶扩展。
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| 关 键 词： | Cr—Ni－Mo铸造热作模具钢 热机械疲劳 温度循环 应力控制 |
| 文章编号： | 0254-6051(2003)06-0013-04 |
Thermomechanical Fatigue Behavior of Cr-Ni-Mo Casting Hot Work Die Steel |
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| FANG Jian ru ,ZHANG Rui qing ,ZHAO Yu qian ,JIANG Qi chuan.Thermomechanical Fatigue Behavior of Cr-Ni-Mo Casting Hot Work Die Steel[J].Heat Treatment of Metals,2003,28(6):13-16. |
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| Authors: | FANG Jian ru ZHANG Rui qing ZHAO Yu qian JIANG Qi chuan |
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| Affiliation: | FANG Jian ru 1,ZHANG Rui qing 1,ZHAO Yu qian 2,JIANG Qi chuan 2 |
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| Abstract: | The thermomechanical fatigue (TMF)life,stress strain responses and fracture characteristics of Cr Ni Mo casting hot work die steel under stress controlling were studied At the same stress levels,the life under in phase thermomechanical fatigue conditions is lower than that under isothermal fatigue conditions at the upper limit temperature In TMF tests,the circular softening and the circular creeping in the tensile direction occur in hot work die steel (HWDS),the TMF crackles of the steel initiate through the grains and grow along grain boundaries frequently |
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| Keywords: | Cr Ni Mo casting hot work die steel thermomechanical fatigue temperature cycle stress control |
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