Investigation on the fracture behavior of titanium grade 2 sheets by using the single point incremental forming process

Yoganjaneyulu, G.; Narayanan, C. Sathiya; Narayanasamy, R.

doi:10.1016/j.jmapro.2018.07.024

Cited by 37 publications

(18 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar microstructures were also observed by other researchers [14 -17]. 2018) stated that the microstructure of titanium Grade 2 consists of α phase and β phases in their microstructure study in their experimental studies [15]. It has been determined that the coaxial grain morphologies in the base material lose the coaxial structure and turn into a column-like structure as the cooling rate increases after micro laser welding.…”

Section: Microstructural Examinationsupporting

confidence: 84%

“…α (black) and β (white) grained base metal microstructureBalasubramanian et al (2011) reported that the α phase was black and the β phase was white in titanium and its alloys, and the grain sizes changed depending on the heat flow[18] Yoganjaneyulu et al (2018). stated that the microstructure of titanium Grade 2 consists of α phase and β phases in their microstructure study in their experimental studies[15]. It has been determined that the coaxial grain morphologies in the base material lose the coaxial structure and turn into a column-like structure as the cooling rate increases after micro laser welding Liu et al (2012).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Weldability of Grade 2 Titanium Sheets with Pulsed Nd:YAG Microlaser Welding Filler and Without Filler

Apay

2022

View full text Add to dashboard Cite

Laser welding method is widely used in the welding of different materials. Deep penetration, low heat input, narrow heat affect zone, low stress-strain, and distortion are important features of this welding method as compared to other joint methods. Today, it is possible to see the applications of laser welding in the repair of precious metals, moulds, and machine parts. The laser welding method is preferred in the manufacture of many parts of precious metals. Titanium and particularly Grade 2 alloys are used in a wide range of applications, from medical applications to the aerospace industry applications. Since titanium is made of precious metals, it is of great use in manufacturing without much scrap. In the joints made by welding, it is estimated that the amount of scrap loss will decrease as a result of the potential to predict the distortion that the material will undergo and to provide more controlled planning of the current production. In this study, the weldability of 0.6 mm sheet materials with laser butt-welding was investigated. The effects of pulsed micro laser welding parameters on the microstructure, mechanical properties, and surface morphology of the fractures were investigated. As a result of the microstructure examination, it was found that cross-section narrowing was seen without filling welding. Fracture of the welded joints occurred in the base metal, showing an ultimate tensile strength of approximately 248 MPa with an elongation of 26.7 %.

show abstract

Section: Microstructural Examinationsupporting

confidence: 84%

mentioning

confidence: 99%

Weldability of Grade 2 Titanium Sheets with Pulsed Nd:YAG Microlaser Welding Filler and Without Filler

Apay

2022

View full text Add to dashboard Cite

show abstract

“…A 0.93 mm thick AA5754-O sheet is incremental formed by a multi-pass technique with a maximum draw angle of 62° and the lowest thickness obtained is at a radial distance of 32 mm and 35 mm corresponding to the Inside-Out steps, which is a better formability than predicted by simple models like Sine Law. After applying a method for predicting rigid body motion (RBM) in multi-pass single point incremental forming (MSPIF), authors claim a better formability of the sheet metal part with an increase in the maximum wall angle of approximately 15° relative to single stage forming [12].…”

Section: Recent Achievements In Sheet Metal Forming Researchmentioning

confidence: 99%

“…A methodology has been proposed for an axisymmetric cone toolpath with a generic framework which authors recommend it to be extended for other MSPIF toolpaths. Also, it is of high importance to use a rigid tool for incremental forming so that the material properties have a negligible effect on the rigid body motion [12]. Some findings of recent proposed models that predict failure during SPIF process are expected to be improved if the failure prediction results would be partially included in the identification process or using an advanced optimization algorithm [10].…”

Section: Future Reasearch Directionsmentioning

confidence: 99%

Tendencies in Forming Sheet Metal Parts Using Incremental Forming Advanced Technologies

CIOFU¹,

Chirita²,

LUPU³

et al. 2019

JESR

View full text Add to dashboard Cite

Stretch forming of sheet metal materials is a highly required process in aerospace industry for manufacturing skin parts. Automation of some processes such as cutting, punching, forming, shearing and nesting in conventional manufacturing tends to combine these forming methods. Some researches are made on the formability of sheet metal materials obtained in incremental forming process with stretch forming and water jet incremental micro-forming with supporting dies. This paper is an attempt to review the newly researches made on optimization of manufacturing metal skin parts to achieve geometrical accuracy.

show abstract

“…Some important observations have been made by detailed literature study and listed here to perform this research work. Yoganjaneyulu et al 1 proposed an experimental test with titanium grade 2 with various process parameters to find the strain rate while forming the sheet metal. After various analyses, authors concluded that shear stress plays a vital role in forming fracture on sheet metal.…”

Section: Introductionmentioning

confidence: 99%

Comparison of incremental sheet metal forming process using newly designed multipoint tool with the existing single point tool by optimization and characterization methods on austenite stainless steel 202

Ramkumar

Krishnan

Chinnayan

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

Incremental Sheet metal Forming (ISF) is a reliable process of converting a blank to work piece with better outputs compared to conventional forming process. The flexibility of ISF in producing the rapid prototype based on the customer needs is increased which is also desirable in the industry. But Single Point Incremental Forming (SPIF) process takes more time to form a product and hence the longer time is a barrier in implementing this process in industries. In this research work, the ISF process was made on sheet metal SS 202 using a newly designed multi-point tool and the obtained outputs were compared with the same material of sheet metal formed by traditionally available single point tool. This Multi Point Incremental Forming (MPIF) process takes lesser process time to give better formability, improved wall angle and good surface roughness. The input process parameters selected for the process are type of tool, speed, feed, Vertical Step Depth (VSD), and lubrication. They are arranged by using the taguchi Design of Experiments (DOE) approach. The responses considered are wall angle, formability, surface roughness, spring back and forming time. The multiple outputs obtained were optimized by Grey Relational Analysis (GRA) to predict the superior parameter. Confirmation test was also made to validate the output result. Fractography analysis was carried out to predict the fracture mechanism obtained during the forming process. The surface topography was also made on the surface of the formed area of the sheet metal. This research work concludes that newly designed MPIF outperforms SPIF.

show abstract

Investigation on the fracture behavior of titanium grade 2 sheets by using the single point incremental forming process

Cited by 37 publications

References 29 publications

Weldability of Grade 2 Titanium Sheets with Pulsed Nd:YAG Microlaser Welding Filler and Without Filler

Weldability of Grade 2 Titanium Sheets with Pulsed Nd:YAG Microlaser Welding Filler and Without Filler

Tendencies in Forming Sheet Metal Parts Using Incremental Forming Advanced Technologies

Comparison of incremental sheet metal forming process using newly designed multipoint tool with the existing single point tool by optimization and characterization methods on austenite stainless steel 202

Contact Info

Product

Resources

About