Effect of Grain Size and Solid Solution Strengthening Elements on the Bake Hardenability of Low Carbon Aluminum-killed Steel
Effect of Grain Size and Solid Solution Strengthening Elements on the Bake Hardenability of Low Carbon Aluminum-killed Steel
复制标题
晶粒尺寸和固溶强化元素对低碳铝镇静钢烘烤淬透性的影响
DOI：
10.2355/isijinternational1966.24.17
复制
发表时间：
1984
影响因子：
1.8
通讯作者：
Yaichiro Mizuyama
中科院分区：
文献类型：
--
作者：
S. Hanai;Nagayasu Takemoto;Y. Tokunaga;Yaichiro Mizuyama
研究了冶金因素对低碳铝镇静钢烘烤淬透性的影响。由焙烧引起的屈服应力变化(ΔYS)由晶粒度和固溶体(C+N)含量决定。另一方面，烘烤引起的极限拉应力变化(ΔTS)主要取决于溶解的(C+N)含量。讨论了位错的锁定机制与这些性质的晶粒度关系。还研究了合金元素(Mn、Si、P)通过其冶金因素对BH的影响。Mn通过降低溶解C含量来降低ΔYS。当硅含量达到0.5%时，固溶碳含量增加，晶粒细化。当硅含量超过0.5%时，晶粒依次粗化。因此，ΔYS增加了高达0.5%的硅含量，并在此之后提高了水平。虽然添加0.06%P对固溶态(C+N)含量没有影响，但细化后的ΔYS含量略有增加。对于含磷量为0.06%的钢，固溶(C+N)含量为-5ppm时，ΔYS具有较大的晶粒度依赖性。
Effect of metallurgical factors on the bake hardenability (BH) of low-C Al-killed steel is studied. The _yield stress change due to baking (ΔYS) is determined by grain size and dissolved (C+N) content. On the other hand, the ultimate tensile stress change due to baking (ΔTS) depends mostly on the dissolved (C+N) content. The locking mechanism of dislocation is discussed in relation to grain size dependence of these properties. The influence of alloying elements (Mn, Si, P) on BH through their metallurgical factors is also studied. Mn decreases ΔYS through the reduction of dissolved C content. Si gives rise to the increase of dissolved C content and grain refining up to 0.5% Si content. Over 0.5% Si content, the grain becomes coarser in turn. Consequently, ΔYS increases up to 0.5% Si content and levels of after that. Though the addition of 0.06% P does not affect the dissolved (C+N) content, it gives rise to a little increase of ΔYS through grain refining. Larger grain size dependence of ΔYS is observed at -5ppm of dissolved (C+N) content for 0.06% P containing steel.