采用机械合金化和高压气雾化两种工艺分别合成了近球形粉末,随后通过粉末注射成形技术制备了0Cr17Mn11Mo3N高氮奥氏体钢材料.用X射线衍射、扫描电镜、拉伸试验等手段研究了粉末和块状材料的结构及性能.结果表明:两种粉末球形度好,颗粒细小,装载量和烧结活性较高,都能够较好满足后续粉末注射成形工艺要求.机械合金化粉末最佳致密化条件是采用真空脱氧+氮气烧结方式,在0.1 MPa氮气压力下于1260℃烧结120 min,烧结体相对密度97.90％,氮含量1.02 mass％,经过1150℃×90 min固溶处理后屈服强度、抗拉强度、伸长率、断面收缩率、维氏硬度分别高达627 MPa、965 MPa、11.3％、16.7％、312HV;高压气雾化粉末最佳致密化条件为0.1 MPa氮气压力下1300 ℃烧结120 min,烧结体相对密度98.33％,氮含量0.78mass％,经固溶处理后屈服强度、抗拉强度、伸长率、断面收缩率、维氏硬度也分别达到580 MPa、885 MPa、26.0％、29.1％、222HV.由于氮在奥氏体中的强化作用,0Cr17Mn11Mo3N高氮奥氏体钢的强度、硬度等远高于传统注射成形316L奥氏体不锈钢.
参考文献
| [1] | Y. Katada;M. Sagara;Y. Kobayashi .Fabrication of High Strength High Nitrogen Stainless Steel with Excellent Corrosion Resistance and Its Mechanical Properties[J].Materials and Manufacturing Processes,2004(1):19-30. |
| [2] | 王威,陈淑梅,严伟,赵立君,单以银,杨柯.氮对冷变形高氮奥氏体不锈钢微观结构的作用[J].材料热处理学报,2010(07):59-65. |
| [3] | LI Hua-bing,JIANG Zhou-hua,ZHANG Zu-rui,YANG Yan.Effect of Grain Size on Mechanical Properties of Nickel-Free High Nitrogen Austenitic Stainless Steel[J].钢铁研究学报（英文版）,2009(01):58-61. |
| [4] | Baba H;Kodama T;Katada Y .Role of nitrogen on the corrosion behavior of austenitic stainless steels[J].Corrosion Science,2002,44:2393-2407. |
| [5] | M. Sumita;T. Hanawa;S. H. Teoh .Development of nitrogen-containing nickel-free austenitic stainless steels for metallic biomaterials—review[J].Materials science & engineering, C. Biomimetic and supramolecular systems,2004(6/8):753-760. |
| [6] | Reclaru L;Ziegenhagen R;Eschler P Y et al.Comparative corrosion study of "Ni-free" austenitic stainless steels in view of medical applications[J].ACTA BIOMATERIALIA,2006,2(04):433-444. |
| [7] | Simmons J W .Overview:High-nitrogen alloying of stainless steels[J].Materials Science and Engineering A,1996,207(02):159-169. |
| [8] | 钟海林,况春江,匡星,毕景维,王广达.粉末冶金高氮不锈钢的研究与发展现状[J].粉末冶金工业,2007(03):44-47. |
| [9] | Uggowitzer P.J. -;Wohlfromm H. -;Speidel MO;Bahre WF .Nickel-free high nitrogen austenitic stainless steels produced by metal injection moulding[J].Materials Science Forum,1999(0):663-672. |
| [10] | Yosuke Aoyama;Midori Komada;Yoshikazu Kuroda;Teruo Takahashi;Noriyuki Tsuchida;Yasunori Harada;Kenzo Fukaura .Mechanical Properties of Ni-Free High-Nitrogen Austenitic Stainless Steel Made by Metal Injection Molding with Nitrogen Absorption Method[J].粉体ぉょび粉末冶金,2009(3):103-107. |
| [11] | M.M. Cisneros;H.F. Lopez;H. Mancha .Processing of Nanostructured High Nitrogen Stainless Steel by Mechanical Alloying[J].Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science,2005(5):1309-1316. |
| [12] | Amini, R;Hadianfard, M;Salahinejad, E;Marasi, M;Sritharan, T .Microstructural phase evaluation of high-nitrogen Fe-Cr-Mn alloy powders synthesized by the mechanical alloying process[J].Journal of Materials Science,2009(1):136-148. |
| [13] | Toshihiro TSUCHIYAMA;Hiroyuki UCHIDA;Kouta KATAOKA .Fabrication of Fine-grained High Nitrogen Austenitic Steels through Mechanical Alloying Treatment[J].ISIJ International,2002(12):1438-1443. |
| [14] | 李笃信,黄伯云.金属注射成形技术研究进展[J].粉末冶金材料科学与工程,2002(01):24-30. |
| [15] | Zi-wei Xu,Cheng-chang Jia,Chun-jiang Kuang,Xuan-hui Qu.Fabrication and sintering behavior of high-nitrogen nickel-free stainless steels by metal injection molding[J].矿物冶金与材料学报,2010(04):423-428. |
| [16] | H. Wohlfromm;P. J. Uggowitzer .P.A.N.A.C.E.A. provides the answer to Ni allergy[J].Metal Powder Report,1998(9):48-52. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%