Graded microstructure and mechanical properties of additive manufactured Ti–6Al–4V via electron beam melting

Advanced Issues in springback

Prediction of shear-induced fracture in sheet metal forming

Welding and Joining of NiTi Shape Memory Alloys: A Review

https://www.tpbin.com/Uploads/Subjects/0611b255-45d7-457a-8988-9c77b24b09c0.pdf

Complex unloading behavior: Nature of the deformation and its consistent constitutive representation

Hardness values as well as yield and tensile strength values were compiled for over 150 nonaustenitic, hypoeutectoid steels having a wide range of compositions and a variety of microstructures. The microstructures include ferrite, pearlite, martensite, bainite, and complex multiphase structures. The yield strength of the steels ranged from approximately 300 MPa to over 1700 MPa. Tensile strength varied over the range of 450-2350 MPa. Regression analysis was used to determine the correlation of the yield strength and the tensile strength to the diamond pyramid hardness values for these steels. Both the yield strength and tensile strength of the steels exhibited a linear correlation with the hardness over the entire range of strength values. Empirical relationships are provided that enable the estimation of strength from a bulk hardness measurement. A weak effect of strain-hardening potential on the hardness-yield strength relationship was also observed.

Correlation of Yield Strength and Tensile Strength with Hardness for Steels

Investigation of residual stress and post weld heat treatment of multi-pass welds by finite element method and experiments

Internal void closure during the forging of large cast ingots using a simulation approach

Optimization of open die forging of round shapes using FEM analysis

Failure in sheared-edge stretching often limits the use of advanced high-strength steel sheets in automotive applications. The present study analyzes data in the literature from laboratory experiments on both the shearing process and the characteristics of sheared edges. Shearing produces a surface with regions of rollover, burnish, fracture, and burr. The effect of clearance and tensile strength on the shear face characteristics is quantified. Higher strength, lower ductility steels exhibit an increase in percent fracture region. The shearing process also creates a zone of deformation adjacent to the shear face called the shear-affected zone (SAZ). From an analysis of data in the literature, it is concluded that deformation in the SAZ is the dominant factor in controlling failure during sheared-edge stretching. The characteristics of the shear face are generally important for failures during sheared-edge stretching only as there is a correlation between the characteristics of the shear face and the characteristics of the SAZ. The effect of the shear burr on shear-edge stretching is also related to a correlation with the characteristics of the SAZ. In reviewing the literature, many shearing variables that could affect sheared-edge stretching limits are not identified or if identified, not quantified. It is likely that some of these variables could affect subsequent sheared-edge stretching limits.

C.J. Van Tyne

Papers

Correlation of Yield Strength and Tensile Strength with Hardness for Steels

Investigation of residual stress and post weld heat treatment of multi-pass welds by finite element method and experiments

Internal void closure during the forging of large cast ingots using a simulation approach

Optimization of open die forging of round shapes using FEM analysis

Review of the Shearing Process for Sheet Steels and Its Effect on Sheared-Edge Stretching