<strong>410L</strong>和<strong>430L</strong>泡沫钢性能的比较

doi:10.11901/1005.3093.2020.404

材料研究学报

2021, Vol. 35

Issue (8): 597-605 DOI: 10.11901/1005.3093.2020.404

研究论文

本期目录 | 过刊浏览

410L和430L泡沫钢性能的比较

张光成, 袁天祥, 马德林, 周萍, 郭超群, 周芸(

), 左孝青

昆明理工大学材料科学与工程学院昆明 650093

Comparision of Structure and Performance for Foamed Stainless Steels 410L and 430L

ZHANG Guangcheng, YUAN Tianxiang, MA Delin, ZHOU Ping, GUO Chaoqun, ZHOU Yun(

), ZUO Xiaoqing

Kunming University of Science Technology, Faculty of Materials Science and Engineering, Kunming 650093, China

引用本文:

张光成, 袁天祥, 马德林, 周萍, 郭超群, 周芸, 左孝青. 410L和430L泡沫钢性能的比较[J]. 材料研究学报, 2021, 35(8): 597-605.
Guangcheng ZHANG, Tianxiang YUAN, Delin MA, Ping ZHOU, Chaoqun GUO, Yun ZHOU, Xiaoqing ZUO. Comparision of Structure and Performance for Foamed Stainless Steels 410L and 430L[J]. Chinese Journal of Materials Research, 2021, 35(8): 597-605.

全文: PDF(15128 KB) HTML

摘要:

以410L和430L不锈钢粉为基体，以CaCl₂为造孔剂，采用粉末冶金烧结溶解法制备出不同孔隙率的410L和430L泡沫钢并分析比较其组织和性能。结果表明：410L和430L泡沫钢的基体组织都是α-Fe；在相同的腐蚀条件下430L不锈钢的抗腐蚀性更强；在烧结过程中410L泡沫钢孔壁表面的氧化程度比430L泡沫钢严重；在准静态压缩变形过程中孔隙率为73%~83%的410L泡沫钢屈服应力为22.06~5.45 MPa，相同孔隙率的430L泡沫钢其屈服应力为56.77~10.44 MPa，430L泡沫钢的抗压强度是410L泡沫钢的2~3倍；应变量为50%时，孔隙率为73%~83%的410L泡沫钢单位体积的能量吸收值为6.12~2.90 MJ/m³。应变量为50%时，孔隙率为72%~83%的430L泡沫钢其单位体积的能量吸收值为40.35~8.25 MJ/m³。430L泡沫钢的单位体积能量吸收值约为410L泡沫钢的3~5倍。

关键词 ：金属材料, 400系泡沫钢, 烧结溶解, 孔隙率, 屈服应力, 吸能性能

Abstract：

Foamed stainless steels 410L and 430L with different porosity were made respectively with powders of the two steels as raw material and CaCl₂ as pore-forming agent via a two-step process i.e., powder metallurgy sintering and post dissolution. Then their microstructure and properties were comparatively assessed. The results show that the two foamed steels of 410L and 430L are composed of merely α-Fe phase. More serious oxidation can be observed on the walls of the as fresh made 410 steel foams rather than that of 430 SS steel foams. The 430L stainless steel foam presents higher corrosion resistance than the 410L stainless steel foam. The compression test results reveal that the yield stress of 410L steel foams with porosity of 73%~83% is in the range of 22.06~5.45 MPa, the yield stress of 430L steel foams with porosity of 72%~83% is in the range of 56.77~10.44 MPa, hence, the compressive strength of 430L steel foam is 2~3 times that of 410L steel foam. Besides, when the strain reaches 50%, 410L steel foams with porosity of 73%~83% have 6.12~2.90 MJ/m³ energy absorption value per unit volume, while the corresponding value for 430L steel foams with porosity of 72%~83% is 40.35~8.25 MJ/m³. Therefore, the energy absorption value per unit volume of 430L steel foams is about 3~5 times that of 410L steel foams.

Key words： metallic materials 400 steel foam sintering-dissolution porosity yield stress energy absorption

收稿日期: 2020-09-27

ZTFLH:

TB34

基金资助:国家自然科学基金(51861020);大学生创新创业训练项目(201710674207)

作者简介: 张光成，男，1994年生，硕士

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https://www.cjmr.org/CN/10.11901/1005.3093.2020.404 或 https://www.cjmr.org/CN/Y2021/V35/I8/597

表1 不锈钢粉末的实际成分

图1 410L和430L不锈钢的金相显微照片

图2 410L和430L不锈钢基体组织的SEM照片

图3 不锈钢基体组织的XRD谱

图4 410L烧结样品内孔表面的SEM照片和EDS图

图5 430L烧结样品内孔表面的SEM照片和EDS图

图6 410L和430L泡沫钢准静态轴向压缩变形的示意图

图7 410L和 430L泡沫钢试样的应力-应变曲线

表2 410L泡沫钢的弹性模量

表3 430L泡沫钢的弹性模量

图8 410L和430L泡沫钢的吸能曲线

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