Effect of Loading Sequence on Notch Strength of Warm Prestressed Alloy SteelSource: Journal of Manufacturing Science and Engineering:;1970:;volume( 092 ):;issue: 004::page 785Author:W. R. Andrews
DOI: 10.1115/1.3427847Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An experimental study of the effects of warm prestressing on the fracture strength of notched and fatigue-cracked bend bars of a Ni-Cr-Mo, low-alloy forging-grade steel was conducted. The steel was tested in four heat treatment conditions simulating four thickness fractions of a 23-1/2 -in-thick forging. Three load-temperature paths were investigated: (1) preload-cool-fracture, (2) preload-cool-unload-fracture, (3) preload-unload-cool-fracture. The fracture strengths of the prestressed bars were compared with the fracture strengths of unprestressed bars. The benefits of prestressing for each load-temperature path decreased in the order listed, although prestressing was always beneficial. The benefits also decreased with decreasing fracture-test temperature relative to the 50-percent FATT.
keyword(s): Fatigue , Temperature , Alloys , Steel , Forging , Alloy steel , Stress , Heat treating (Metalworking) , Fracture (Process) AND Thickness ,
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| contributor author | W. R. Andrews | |
| date accessioned | 2017-05-09T00:40:37Z | |
| date available | 2017-05-09T00:40:37Z | |
| date copyright | November, 1970 | |
| date issued | 1970 | |
| identifier issn | 1087-1357 | |
| identifier other | JMSEFK-27556#785_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/144711 | |
| description abstract | An experimental study of the effects of warm prestressing on the fracture strength of notched and fatigue-cracked bend bars of a Ni-Cr-Mo, low-alloy forging-grade steel was conducted. The steel was tested in four heat treatment conditions simulating four thickness fractions of a 23-1/2 -in-thick forging. Three load-temperature paths were investigated: (1) preload-cool-fracture, (2) preload-cool-unload-fracture, (3) preload-unload-cool-fracture. The fracture strengths of the prestressed bars were compared with the fracture strengths of unprestressed bars. The benefits of prestressing for each load-temperature path decreased in the order listed, although prestressing was always beneficial. The benefits also decreased with decreasing fracture-test temperature relative to the 50-percent FATT. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Effect of Loading Sequence on Notch Strength of Warm Prestressed Alloy Steel | |
| type | Journal Paper | |
| journal volume | 92 | |
| journal issue | 4 | |
| journal title | Journal of Manufacturing Science and Engineering | |
| identifier doi | 10.1115/1.3427847 | |
| journal fristpage | 785 | |
| journal lastpage | 791 | |
| identifier eissn | 1528-8935 | |
| keywords | Fatigue | |
| keywords | Temperature | |
| keywords | Alloys | |
| keywords | Steel | |
| keywords | Forging | |
| keywords | Alloy steel | |
| keywords | Stress | |
| keywords | Heat treating (Metalworking) | |
| keywords | Fracture (Process) AND Thickness | |
| tree | Journal of Manufacturing Science and Engineering:;1970:;volume( 092 ):;issue: 004 | |
| contenttype | Fulltext |