Effect of heat treatment on the hydrogen delayed fracture of high strength spring steel

2013 ◽  
Vol 27 (10) ◽  
pp. 2991-2996 ◽  
Author(s):  
Yong-Jun Lee ◽  
Jun-Ho Park ◽  
Dong-Ho Lee ◽  
Sung-Su Kang
Keyword(s):  
Heat Treatment ◽  
High Strength ◽  
Spring Steel ◽  
Delayed Fracture

scholarly journals On the effects of heat and surface treatment on the fatigue performance of high-strength leaf springs

2021 ◽  
Vol 349 ◽  
pp. 04007
Author(s):  
Michail Malikoutsakis ◽  
Christos Gakias ◽  
Ioannis Makris ◽  
Peter Kinzel ◽  
Eckehard Müller ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Applied Stress ◽  
Shot Peening ◽  
High Strength ◽  
Fatigue Tests ◽  
Spring Steel ◽  
Fatigue Performance ◽  
Leaf Springs ◽  
Before And After ◽  
Stress Ratios

Leaf springs constitute the most effective suspension way of commercial vehicle axles from the cost and maintainability point of view. Especially in case of front axles, they overtake both the guidance and suspension functions, which consequently designates them as safety components, whose pre-mature failure is explicitly prohibited. The present paper deals with the fatigue performance of downsized parabolic leaf specimens made of the high-strength spring steel 51CrV4 under serial manufacturing conditions. It focuses on the influence of the major manufacturing steps, i.e. the heat treatment and the subsequently applied stress shot peening. The effectiveness of the applied heat treatment on the microstructure transformation and the extent of surface decarburization is determined by means of optical microscopy and corresponding microstructural analyses. Comprehensive series of constant amplitude fatigue tests are executed before and after the applied stress shot peening to quantify its effectiveness on the fatigue performance. The tests cover two characteristic stress ratios of operational significance with the complete range of interest being experimentally investigated. Additionally, surface residual stresses measurements together with micro- and macro-hardness and roughness values before and after stress shot peening are executed to expose the influence of each individual technological effect on the overall fatigue performance.

Effects of Niobium and Vanadium on Hydrogen-Induced Delayed Fracture in High Strength Spring Steel

2011 ◽  
Vol 18 (6) ◽  
pp. 49-53 ◽  
Author(s):  
Chao-lei Zhang ◽  
Ya-zheng Liu ◽  
Chao Jiang ◽  
Jin-fu Xiao
Keyword(s):  
High Strength ◽  
Spring Steel ◽  
Delayed Fracture

Delayed Fracture Resistance of 30MnSi High Strength Steel

2012 ◽  
Vol 174-177 ◽  
pp. 223-227
Author(s):  
Shuang Ping Lin ◽  
Yan Zhang ◽  
Mei Guang Fan ◽  
Ben Rong Sun
Keyword(s):  
Heat Treatment ◽  
High Strength Steel ◽  
Fracture Resistance ◽  
High Strength ◽  
Heat Treatments ◽  
Temperature Quenching ◽  
Quenching Temperature ◽  
Delayed Fracture ◽  
Steel Bars ◽  
Marked Drop

To investigate the effect of heat treatment on delayed fracture resistance of high strength steel, 30MnSi steel bars with different heat-treatments are produced. Tensile results showed that, the annealing and sub-temperature quenching steel bars have good delayed fracture resistance and satisfy the criteria that delayed fracture does not occur in 200 h, but there is a marked drop in delayed fracture resistance when the quenching temperature is higher than sub-temperature quenching

CMW 100

Alloy Digest ◽  
2000 ◽  
Vol 49 (10) ◽  
Keyword(s):  
Thermal Conductivity ◽  
Heat Treatment ◽  
Copper Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
High Tensile Strength ◽  
Electrical Components ◽  
Flash Welding ◽  
Hardening Heat Treatment

Abstract CMW 100 is a copper alloy that combines high tensile strength with high electrical and thermal conductivity. It responds to age-hardening heat treatment. It is used for flash welding dies, springs, electrical components, high-strength backing material for brazed assemblies, and wire guides. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CU-29. Producer or source: CMW Inc. Originally published as Mallory 100, August 1955, revised October 2000.

CONFLEX 720

Alloy Digest ◽  
1964 ◽  
Vol 13 (7) ◽  
Keyword(s):  
Heat Treatment ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Surface Treatment ◽  
Nickel Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Age Hardening ◽  
Copper Manganese ◽  
Hardening Heat Treatment

Abstract CONFLEX 720 is a copper-manganese-nickel alloy that responds to an age-hardening heat treatment for high strength and corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as heat treating, machining, joining, and surface treatment. Filing Code: Cu-143. Producer or source: Metals & Controls Inc..

UNS A97075

Alloy Digest ◽  
1986 ◽  
Vol 35 (7) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Aluminum Alloy ◽  
High Strength ◽  
Heat Treating ◽  
Good Resistance ◽  
Temperature Performance ◽  
Structural Applications ◽  
Structural Parts ◽  
Very High

Abstract UNS No. A97075 is a wrought precipitation-hardenable aluminum alloy. It has excellent mechanical properties, workability and response to heat treatment and refrigeration. Its typical uses comprise aircraft structural parts and other highly stressed structural applications where very high strength and good resistance to corrosion are required. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on low temperature performance as well as forming, heat treating, and machining. Filing Code: Al-269. Producer or source: Various aluminum companies.

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