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Author: Metals Technical Committee Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
This standard describes a test method for evaluating the susceptibility of uncoated cold rolled and hot rolled Ultra High Strength Steels (UHSS) to hydrogen embrittlement. The thickness range of materials that can be evaluated is limited by the ability to bend and strain the material to the specified stress level in this specification.Hydrogen embrittlement can occur with any steel with a tensile strength greater than or equal to 980 MPa. Some steel microstructures, especially those with retained austenite, may be susceptible at lower tensile strengths under certain conditions. The presence of available hydrogen, combined with high stress levels in a part manufactured from high strength steel, are necessary precursors for hydrogen embrittlement.Due to the specific conditions that need to be present for hydrogen embrittlement to occur, cracking in this test does not indicate that parts made from that material would crack in an automotive environment. Results from this test should be considered in conjunction with the strain state of the material and the operating environment of the part when selecting any UHSS. Since this test method is comparative, the most information can be gained if a control sample of known performance is evaluated along with the material being studied. Aggressive mass reduction targets for ground vehicles have led to the development of a new generation of high strength steels. Very high tensile strength as well as the presence of retained austenite as a major microstructural constituent make these steels susceptible to hydrogen embrittlement.
Author: Metals Technical Committee Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
This standard describes a test method for evaluating the susceptibility of uncoated cold rolled and hot rolled Ultra High Strength Steels (UHSS) to hydrogen embrittlement. The thickness range of materials that can be evaluated is limited by the ability to bend and strain the material to the specified stress level in this specification.Hydrogen embrittlement can occur with any steel with a tensile strength greater than or equal to 980 MPa. Some steel microstructures, especially those with retained austenite, may be susceptible at lower tensile strengths under certain conditions. The presence of available hydrogen, combined with high stress levels in a part manufactured from high strength steel, are necessary precursors for hydrogen embrittlement.Due to the specific conditions that need to be present for hydrogen embrittlement to occur, cracking in this test does not indicate that parts made from that material would crack in an automotive environment. Results from this test should be considered in conjunction with the strain state of the material and the operating environment of the part when selecting any UHSS. Since this test method is comparative, the most information can be gained if a control sample of known performance is evaluated along with the material being studied. Aggressive mass reduction targets for ground vehicles have led to the development of a new generation of high strength steels. Very high tensile strength as well as the presence of retained austenite as a major microstructural constituent make these steels susceptible to hydrogen embrittlement.
Author: Jon M. Quigley Publisher: SAE International ISBN: 1468605917 Category : Technology & Engineering Languages : en Pages : 463
Book Description
Created to elevate expertise in testing, verification, and validation with industry-specific terminology, readers are empowered to navigate the complex world of quality assurance. From foundational concepts to advanced principles, each entry provides clarity and depth, ensuring the reader becomes well-versed in the language of precision. This dictionary is an indispensable companion for both professionals and students seeking to unravel the nuances of testing methodologies, verification techniques, and validation processes. Readers will be equipped with the tools to communicate effectively, make informed decisions, and excel in projects. In addition, references to SAE Standards are included to direct the read to additional information beyond a practical definition. (ISBN 9781468605907, ISBN 9781468605914, ISBN 9781468605921, DOI 10.4271/9781468605914)
Author: Eren Billur Publisher: Springer ISBN: 3319988700 Category : Technology & Engineering Languages : en Pages : 251
Book Description
Providing a comprehensive overview of hot stamping (also known as ‘press hardening’), this book examines all essential aspects of this innovative metal forming method, and explores its various uses. It investigates hot stamping from both technological and business perspectives, and outlines potential future developments. Individual chapters explore topics such as the history of hot stamping, the state of the art, materials and processes employed, and how hot stamping is currently being used in the automotive industry to create ultra-high-strength steel components. Drawing on experience and expertise gathered from academia and industry worldwide, the book offers an accessible resource for a broad readership including students, researchers, vehicle manufacturers and metal forming companies.
Author: Yisheng Zhang Publisher: Springer Nature ISBN: 9464631147 Category : Technology & Engineering Languages : en Pages : 456
Book Description
This is an open access book. The scope of papers is as follows (including but not limited to): Material and process of low temperature hot stamping (heating temperature 750-800°C) Cold stamping technology of advanced high strength steel 1180-1470MPa Technology and application of multi-material forming (mixed forming of carbon fiber composites, steel and aluminum) Laser blanking and defect prevention of advanced high strength steel Process of new coating of high strength steel and prevention of hydrogen embrittlement delayed fracture Research progress of multi-step hot stamping strengthening technology High strength steel/aluminum alloy and light-weight and high performance materials Hot stamping of high-strength steel/high-strength aluminium alloy Stamping and roll forming of high strength steel Cold/hot stamping of tailor-welded blanks Modeling and forming simulation of stamping components Application of advanced high strength steel stamping Material surface condition, friction and lubrication Material coatings, corrosion and corrosion protection Hot stamping Component design and body-in-white Heating and cooling methods and processes Microstructure and phase transition of cold-hot stamping forming material Tooling design and manufacturing Test and evaluation of advanced high strength steel stamping components Laser cutting and welding of advanced high strength steel stamping components Digital and intelligent technology and application of hot stamping forming equipment Lightweight design and advanced high strength steel components forming technology for commercial vehicles Other advanced forming technologies
Author: Metals Technical Committee
Author: Metals Technical Committee
Author: Raymond L.
Author: Kenneth Farrell
Author: Louis Raymond
Author: Jon M. Quigley
Author: Donald George Benson
Author: Eren Billur
Author: Yisheng Zhang
Author: Joseph A. Ronevich
Author: Alexander Robert Troiano