The metastable austenite was transformed to martensite by prestrain tension of SUS304 stainless steel to study the influence of transformed martensite on its subsequent work-hardening behavior under the uniaxial tensile condition. The X-ray diffractometer (XRD) was employed to detect the transformed martensite. Results showed that the volume fraction of transformed martensite increases with increasing prestrain. The pre-transformed martensite in the microstructure remarkably affects the deformation behavior of the steel, and the strength increases and the elongation decreases. The work-hardening curve of prestrained specimens observably changes with true strain. The work-hardening exponent n of stainless steel decreases with the increase of pre-transformed martensite. The achievement is a significant contribution to the process design during pressing.
参考文献
[1] | Smaga M;Walther E;Eifler D .Deformation-induced martensitic transformation in metastable austenitic steels[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(0):394-397. |
[2] | Milad M;Zreiba N;Elhalouani F et al.The Effect of Cold Work on Structure and Properties of AISI 304 Stainless Steel[J].Journal of Materials Processing Technology,2008,203:80. |
[3] | Jha Abhay K;Sivakumar D;Sreekumar K et al.Role of Transformed Martensite in the Cracking of Stainless Steel Plumbing Lines[J].Engineering Failure Analysis,2008,15:1042. |
[4] | Perdahcioglu E S;Geijselaers H J M et al.Influence of Plastic Strain on Deformation-Induced Martensitic Transformations[J].Scripta Materialia,2008,58:947. |
[5] | Dolinsek S .Work-Hardening in the Drilling of Austenitic Steels[J].Journal of Materials Processing Technology,2003,133:63. |
[6] | 韦习成,李健,MENG Hua.含亚稳残余奥氏体HSLA TRIP钢的摩擦磨损性能研究[J].摩擦学学报,2006(01):49-53. |
[7] | Riviere J P;Brin C;Villain J P .Structure and Topography Modifications of Austenitic Steel Surfaces After Friction in Sliding Contact[J].Applied Physics,2003,76A:277. |
[8] | Xiaodong WANG,Baoxu HUANG,Yonghua RONG,Li WANG.Mechanical and Transformation Behaviors of a C-Mn-Si-Al-Cr TRIP Steel under Stress[J].材料科学技术学报(英文版),2006(05):625-628. |
[9] | Ludwigson D C .Modified Stress-Strain Relation for FCC Metals and Alloys[J].Metallurgical and Materials Transactions,1997,2:2825. |
[10] | O'Sullivan D;Cotterell M;Meszaros I .The Characterization of Work-Hardened Austenitie Steel by NTD Micro-Magnetic Techniques[J].NTD& E International,2004,37:265. |
- 下载量()
- 访问量()
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%