低碳微合金钢部分物理性能的研究
关键词：弹性模量；内耗；热膨胀系数；密度；低碳微合金钢
Abstract: With the actual production of material life, the increasing demand for steel, Types of steel materials are becoming increasingly numerous, Each of the different grades which have a different purpose and performance, There are also their advantages and disadvantages. In textbooks, We learned the different carbon content steel, I have learned a different heat treatment processes, know the different heat treatment process will greatly change the material of the performance. This time we studied is currently emerging in the international community of a new alloy:NO.BS950 low carbon micro-alloyed steel. Based on experimental data compare with the actual production and living, Explore low carbon microalloyed steel elastic modulus, thermal expansion coefficient, friction, thermal conductivity, A series of physical performance, as well as in a variety of production effects of variation in life.
1 引言 1
1.1 选题背景 1
1.2 低碳微合金钢概况 1
1.2.1 低碳微合金钢 1
1.2.2 微合金钢的发展 2
1.2.3 国内微合金钢现状及发展规划[4] 4
1.3 热导率 5
1.3.1 概述[6] 5
1.4 内耗 5
1.4.1 内耗的定义 5
1.4.2 内耗的检测及评估 6
1.4.3 内耗产生的原因 7
1.5 热膨胀 9
1.5.1 热膨胀系数 9
1.5.2 热膨胀仪 10
1.6 密度 10
1.6.1 物理意义 10
1.6.2 固体密度的测量方法 11
1.7 弹性模量 11
1.7.1 定义 11
1.8 研究目标和内容 11
2 实验过程 12
2.1 弹性模量的测量 12
2.1.1 试样的制备工艺 12
2.1.2 测量共振频率 14
2.2 密度的测量 17
2.2.1 试样的制备工艺 17
2.2.2 质量的测量 17
2.2.3 密度的计算 18
2.3 热膨胀系数的测量 19
2.3.1 试样的制备工艺 19
2.3.2 热膨胀的测量： 19
2.3.3 数据记录。 20
2.4 内耗的测量 20
2.4.1 扭摆 20