Mechanical Property Modification and Morphology of Poly(styrene-b-hydrogenated butadiene-b-styrene)/ Poly(hydrogenated butadiene) Blends

1994 ◽  
Vol 27 (19) ◽  
pp. 5329-5340 ◽  
Author(s):  
J. P. Baetzold ◽  
I. Gancarz ◽  
X. Quan ◽  
J. T. Koberstein
Keyword(s):  
Mechanical Property ◽  
Property Modification

Regularities of PLA mechanical property modification under ion implantation conditions

Vacuum ◽  
2021 ◽  
Vol 187 ◽  
pp. 110105
Author(s):  
I.V. Vasenina ◽  
O.A. Laput ◽  
I.A. Kurzina
Keyword(s):  
Mechanical Property ◽  
Ion Implantation ◽  
Property Modification

Structure and mechanical property modification of a Ti-based metallic glass by ion irradiation

2015 ◽  
Vol 103 ◽  
pp. 41-44 ◽  
Author(s):  
Yongjiang Huang ◽  
Hongbo Fan ◽  
Xinyu Zhou ◽  
Peng Xue ◽  
Zhiliang Ning ◽  
...  
Keyword(s):  
Mechanical Property ◽  
Metallic Glass ◽  
Ion Irradiation ◽  
Property Modification

Thermomechanical Treatment of a 4340 Ni-Cr-Mo Alloy Steel

1981 ◽  
Vol 39 ◽  
pp. 314-315 ◽  
Author(s):  
M.T. Jahn ◽  
J.C. Yang ◽  
C.M. Wan
Keyword(s):  
Mechanical Property ◽  
Chemical Composition ◽  
Alloy Steel ◽  
Thermomechanical Treatment ◽  
Room Temperature ◽  
Good Combination ◽  
Thermal Treatments ◽  
Low Carbon ◽  
4340 Steel ◽  
Good Improvement

4340 Ni-Cr-Mo alloy steel is widely used due to its good combination of strength and toughness. The mechanical property of 4340 steel can be improved by various thermal treatments. The influence of thermomechanical treatment (TMT) has been studied in a low carbon Ni-Cr-Mo steel having chemical composition closed to 4340 steel. TMT of 4340 steel is rarely examined up to now. In this study we obtain good improvement on the mechanical property of 4340 steel by TMT. The mechanism is explained in terms of TEM microstructures4340 (0.39C-1.81Ni-0.93Cr-0.26Mo) steel was austenitized at 950°C for 30 minutes. The TMTed specimen (T) was obtained by forging the specimen continuously as the temperature of the specimen was decreasing from 950°C to 600°C followed by oil quenching to room temperature. The thickness reduction ratio by forging is 40%. The conventional specimen (C) was obtained by quenching the specimen directly into room temperature oil after austenitized at 950°C for 30 minutes. All quenched specimens (T and C) were then tempered at 450, 500, 550, 600 or 650°C for four hours respectively.

10-step Synthesis of 20-nor-Salvinorin A by Dynamic Strategic Bond Analysis

2017 ◽  
Author(s):  
Jeremy Roach ◽  
Yusuke Sasano ◽  
Cullen Schmid ◽  
Saheem Zaidi ◽  
Vsevolod Katritch ◽  
...  
Keyword(s):  
Total Synthesis ◽  
Opioid Receptors ◽  
Structural Modification ◽  
High Selectivity ◽  
Therapeutic Potential ◽  
Salvinorin A ◽  
High Affinity ◽  
Plant Metabolite ◽  
Complex Architecture ◽  
Property Modification

Salvinorin A (SalA) is a plant metabolite that agonizes the human <i>kappa</i>-opioid receptor (κ-OR) with high affinity and high selectivity over <i>mu- </i>and <i>delta-</i>opioid receptors. Its therapeutic potential has stimulated extensive semi-synthetic studies and total synthesis campaigns. However, structural modification of SalA has been complicated by its instability, and efficient total synthesis has been frustrated by its dense, complex architecture. Treatment of strategic bonds in SalA as dynamic and dependent on structural perturbation enabled the identification of an efficient retrosynthetic pathway. Here we show that deletion of C20 simultaneously stabilizes the SalA skeleton, simplifies its synthesis and retains its high affinity and selectivity for the κ-OR. The resulting 10-step synthesis now opens the SalA scaffold to deep-seated property modification.

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