C元素对0Cr19Ni9钢高温力学性能的影响  

Influence of C Elements on High Temperature Mechanical Properties of 0Cr19Ni9 Steel

作　　者：李宁[1] 杨功斌[1] 金艳阳[1] Li Ning;Yang Gongbin;Jin Yanyang(Shenyang Kejin Special Material Co.,Ltd.,Liaoning Shenyang 110101)

机构地区：[1]沈阳科金特种材料有限公司,辽宁沈阳110101

出　　处：《山西冶金》2018年第3期7-8,58,共3页Shanxi Metallurgy

摘　　要：对不同C含量的奥氏体不锈钢0Cr19Ni9材料进行固溶处理,研究了固溶后试样的高温力学性能和抗晶间腐蚀性能,研究发现:随着合金元素C元素含量的增加,0Cr19Ni9材料的350℃高温力学拉伸强度逐渐增加,最大达到R_m为419 MPa,碳含量的增加促使抗晶间腐蚀性能下降,碳量较高的试样在晶间腐蚀实验时出现微裂纹。因此当采用增加C元素含量的方法来提高材料的高温力学性能时,要合理控制C含量的范围,避免出现晶间腐蚀。In this paper, the austenitic stainless steel 0Cr19Ni9 materials with different C contents were treated by solid solution. The mechanical behavior under high temperature and intergranular corrosion resistance of the samples after solid solution were studied. The study found that with the increase of C content, the mechanical tensile strength of 0Cr19Ni9 material at 350 ℃ high temperature increased gradually, with Rm reaching the maximum of 419 MPa.The increase of carbon content contributed to the decrease of intergranular corrosion resistance, and the samples with higher carbon content appeared microcracks during the intergranular corrosion experiment. Therefore, when increasing the content of C elements to improve the mechanical properties of materials at high temperature, the C content range should be reasonably controlled to avoid intergranular corrosion.

关 键 词：高温力学性能 α铁素体 固溶温度 晶间腐蚀 

分 类 号：TG115.31[金属学及工艺—物理冶金]